This miracle plant was eaten into extinction 2,000 years ago—or was it? (2022)

ByTaras Grescoe

Photographs ByAlice Zoo

Illustrations byNirupa Rao

Video byGeorge Selley

Published September 23, 2022

From before the rise of Athens to the height of the Roman Empire, one of the most sought-after products in the Mediterranean world was a golden-flowered plant called silphion. For ancient Greek physicians, silphion was a cure-all, prized for everything from stomach pain to wart removal. For Roman chefs, it was a culinary staple, crucial for spicing up an everyday pot of lentils or finishing an extravagant dish of scalded flamingo. During the reign of Julius Caesar, more than a thousand pounds of the plant was stockpiled alongside gold in Rome’s imperial treasuries, and silphion saplings were valued at the same price as silver.

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But just seven centuries after the adored plant was first documented growing along the coast of Cyrenaica, in what is now modern Libya (according to one chronicler, it was in 638 B.C. after a “black rain” fell) silphion disappeared from the ancient Mediterranean world.

“Just one stalk has been found,” Roman chronicler Pliny the Elder lamented in his Natural History in the first century A.D., “and it has been given to the Emperor Nero.”

Since the Middle Ages, botanical explorers inspired by ancient accounts of this remarkable plant have sought it on three continents, and always in vain. Many historians view the disappearance of silphion as the first recorded extinction of any species, plant or animal, and a cautionary tale in how thoroughly human appetite can erase a species from the wild.

But is silphion truly extinct? Thanks to a lucky encounter almost 40 years ago, and decades of subsequent research, a professor at Istanbul University suspects he has re-discovered the last holdouts of the ancient plant more than a thousand years after it disappeared from history books, and nearly a thousand miles from where it once grew.

A “chemical gold mine”

On a sunny morning in October of last year, Mahmut Miski stood in the boulder-strewn foothills of an active volcano in the Cappadocia region of central Turkey, sweeping an arm towards a thicket of grooved, buff-colored stalks shaded by wild pistachio trees. “Welcome to 'silphion land,'” the 68-year-old professor said, as he stooped to pull a stalk and its gnarled root from the rocky soil. The root ball—the chemical factory of the plant—perfumed the air with a pleasant, slightly medicinal odor, halfway between eucalyptus and pine sap. “To me, the smell is stimulating, as well as relaxing,” Miski explained. “You can see why everybody who encounters this plant becomes attached to it.”

Miski, whose field at Istanbul University is pharmacognosy, the study of medicines derived from natural sources, had first seen the modern plant he now believes to be the silphion of the ancients while doing postdoctoral research 38 years earlier. He’d received a grant to collect specimens of Ferula, a genus of flowering plants in a family (Apiaceae) that includes carrots, fennel, and parsley, and has a reputation for yielding many novel disease-fighting compounds.

On a spring day in 1983, two boys from a small Cappadocian village led Miski along a precipitous dirt road to the slopes of Mount Hasan, where their family eked out a living growing barley and chickpeas. Behind fieldstone walls that protected the plants from grazing livestock, the brothers showed Miski several unusually tall Ferula plants with thick stems that oozed an acrid-tasting resin. The professor’s research eventually revealed that only one other specimen of this plant had ever been collected—back in 1909 at a site 150 miles to the east of Mount Hasan—and was subsequently identified as a new species: Ferula drudeana.

Miski’s hunch that Ferula drudeana would prove to be a chemical gold mine turned out to be correct: Analyses of the root extract identified 30 secondary metabolites—substances which, while they don’t contribute to the primary business of helping a plant grow or reproduce, nonetheless confer some kind of selective advantage. Among the compounds, many of which have cancer-fighting, contraceptive, and anti-inflammatory properties, is shyobunone, which acts on the brain’s gamma-aminobutiric acid (GABA) receptors and may contribute to the plant’s intoxicating smell. Miski believes that future analyses of the plant will reveal the existence of dozens of yet-to-be-identified compounds of medical interest.

“You find the same chemicals in rosemary, sweet flag, artichoke, sage, and galbanum, another Ferula plant,” the professor marvels. “It’s like you combined half a dozen important medicinal plants in a single species.”

Compelling similarities

Ferula drudeana clearly held medical potential, but it was only on a return visit to Mount Hasan in 2012 that Miski began to ponder its similarities with the silphion plant he’d read about in old botanical texts. The young caretakers of theFerulaplants had told the professor how sheep and goats loved to graze on its leaves, which reminded him of a description in Pliny’s Natural History of sheep being fattened on silphion. Miski also observed that after being drawn to the pearl-colored sap, flying insects began to mate, which made him think of legends that celebrated the ancient plant’s aphrodisiac qualities.

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In a 2021 paper published in the journal Plants,Miski descibed the similarities between silphion, described in ancient texts and depicted on Cyrenaican coins to celebrate the region’s most famous export, and Ferula drudeana: thick, branching roots, similar to ginseng; frond-like basal leaves; a grooved stalk rising towards extravagant circular clusters of flowers; celery-like leaves; and papery fruits, or mericarps, in the shape of inverted hearts.

Similarity in appearance wasn’t the only compelling link. The original silphion was said to have appeared suddenly, after a great downpour. Miski observed that, when rains came to Cappadocia in April, Ferula drudeanawould spring from the ground, growing up to six feet in just over a month.

Because ancient silphion resisted cultivation, it had to be harvested in the wild, a task that Cyrenaic nobles entrusted to desert nomads; two attempts (reported by Hippocrates) to transplant it to mainland Greece failed. Miski also found Ferula drudeana difficult to transplant; it was only by using cold stratification, a technique in which seeds are tricked into germinating by exposing them to wet, winter-like conditions, that his team was able to propagate the plant in a greenhouse.

Since the early 19th century, three contemporary species have been put forth as potential candidates for being the long-lost silphion. The stalk and fruits of Ferula tingitana, known as giant fennel, resemble the plant depicted on Cyrenaic coins, and its resin is used as a folk medicine in Morocco, but the plant’s high ammonia content makes it virtually inedible. Cachrys ferulacea has heart-shaped fruits and produces an agreeably scented resin, but its leaves don’t correspond to the ancient descriptions; it is also a common plant in Italy and Greece, places the ancient sources made clear silphion didn’t grow. Margotia gummifera comes tantalizingly close to the images depicted on coins, but the plant’s range—which includes northwest Africa and the Iberian Peninsula—doesn’t match, its stalk is too thin, and several studies have concluded it has little value as a medicinal plant.

“Morphologically, Ferula drudeana seems to be the most likely candidate,” says Shahina Ghazanfar, a research associate who specializes in the taxonomy of Middle Eastern plants at the Royal Botanic Gardens at Kew, London. “The striated stems, fruits, and possibly the root all seem to point to the idea that this Ferula species could possibly be a remnant cultivated plant in Anatolia that was known as silphion.” Ghazanfar singles out the distinctive way the leaves are arrayed on opposing sides of the stem. “The opposite leaves, which aren’t found in the other species, are particularly convincing.”

A far-flung survivor?

While Ferula drudeana fits ancient descriptions of the silphion plant more closely than any other species yet proposed, there is a problem: Ancient descriptions were unanimous that the best silphion came exclusively from a narrow zone around the city of Cyrene, a site now occupied by the modern settlement of Shahat in Libya. The foothills of Mount Hasan are 800 miles northeast, as the crow flies, across the Mediterranean. When Miski presents his research at conferences, he emphasizes the fact that the plant has been recorded in two locations in Turkey, both of which had historic Greek populations stretching back to antiquity.

Last October, Mehmet Ata, who as a boy led Miski to the orchard where the plant grew, directed us to a nearby village and showed us his childhood home, now abandoned, which consisted of a warren of dark rooms carved directly into volcanic rock. Ata, now a grandfather, explained that his family had taken possession of the home sometime after the 1923 expulsion of Greeks from the region; before then, the village had been inhabited by Cappadocian Greeks who had inhabited villages in central Anatolia from the time of Alexander the Great, and Miski speculates that 2,000 or so years ago, a Greek trader or farmer tried planting silphion seeds that had been sent to him from North Africa.

“Because it takes at least ten years to mature, they might have planted it, then forgotten all about it. But the plant kept on growing in the wild, and ended up populating this small area,” he offers. “The descendants of the original farmers wouldn’t have known what the heck it was.”

Erica Rowan, an associate professor in archaeobotany at Royal Holloway University of London, finds Miski’s speculations plausible. “The ancients were very good at transporting things,” Rowan points out. “There’s no reason why people from Cyrenaica couldn’t have brought the seeds to Cappadocia and planted them. They’re similar enough, with a Mediterranean climate. And this Ferula species does look like what’s shown on the coins.”

Alain Touwaide, a historian who specializes in medical plants of antiquity, is more skeptical, and questions the reasoning that "this is something Greek, because there were once Greeks there.” Touwaide argues that Miski’s team would make a stronger argument by isolating compounds in Ferula drudeana that play a similar medical role to those for which silphion was prescribed.

The problem is that ancient authorities seemed to prescribe the plant for just about everything. Silphion was a cure for baldness and dental pain, for pleurisy and epilepsy, and a balm, according to one lyrical translation, for both the “dog-bitten” and the “scorpion-smitten.”

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The only real way to confirm whether they’re one and the same is if we had remains of the ancient plant to compare for analysis, say from a jar clearly labeled “silphion” that’s excavated from an archaeological site, says Lisa Briggs, a post-doctoral researcher at the British Museum and National Geographic Explorer. A recent paper she co-authored recommends the Libyan seaside town of Susa, the island of Malta, and the Greek port of Piraeus as good sites for archaeologists to look for the remains of shipwrecks that may have sunk while transporting silphion.

The culinary “Holy Grail”

In the absence of a well-labelled jar of silphion being hauled from the deep, most experts agree that there is one promising—though not surefire—way of supporting the idea that Ferula drudeana corresponds to the silphion of the ancients: somebody would have to eat it. “Its medical properties were important to the ancients, but silphion’s defining characteristic was that it was a seasoning,” says Rowan.

Unlike classical medical texts, which tend to be vague on details, the cookbooks that survive from antiquity are often explicit about quantities and techniques. The most famous, a handbook of 475 recipes that took its final form in the fourth century A.D., is known as Apicius, after a celebrated gourmet who lived under the reign of Roman emperor Tiberius (r. A.D. 14-37). Dozens of recipes in the compilation call for silphion, in one of three forms: pure gum resin, referred to as laser vivum; resin mixed with flour (laserpicium); or the dry root (laseris radix), which is generally cut into pieces and crushed in a mortar and pestle with other seasonings.

For Sally Grainger, a researcher who co-edited the authoritative English translation of Apicius, “finding the original silphion, and experiencing ancient recipes afresh with it, is a kind of Holy Grail.”

Grainger, who worked as head pastry chef at London’s Atheneum Hotel for five years before earning a degree in ancient history, demonstrates Roman cooking techniques on her “A Taste of the Ancient World” YouTube channel. Until now, she recreated recipes calling for Libyan silphion using a lower-quality substitute mentioned in Apicius: “Parthian laser,” which is believed to be asafoetida, a resin derived from another Ferula species that grows in Afghanistan and is used in contemporary Indian cuisine under the name hing. When the original silphion became hard to find, Roman chefs began to substitute the cheaper and more abundant asafoetida, and Apicius makes a clear distinction between the high-class Libyan plant and its more pungent, sulfurous eastern cousin.

On a sunny May morning in Istanbul’s Nezahat Gökyiğit Botanical Garden, Turkey’s most important repository of plant biodiversity, Grainger and Miski gathered at a makeshift outdoor kitchen to find out if Ferula drudeanamay indeed be culinary history’s Holy Grail.

The professor had just returned with plant samples from the foothills of Mount Hasan, where Ata had been monitoring the plant’s development. Snowmelt had abundantly irrigated the site, and the field was a riot of brilliant yellow flowers—Ferula plants in full bloom meant the roots would be at their most pharmacologically active. Grainger had traveled from the UK with mortar and pestle, as well as all the spices and condiments needed to recreate recipes from Apicius, including sweet wines, the fermented fish sauce garum, and herbs such as rue and lovage.

Now, as terracotta pots full of lentils stewed over charcoal braziers, Miski presented the chef with a thick, ridged stalk of Ferula drudeana, pearl-colored sap oozing from a fresh cut. Grainger dropped a lump of hardened resin collected from the plant into a pan of heated olive oil, the first step in making laseratum, a simple silphion-based dressing. A distinctive scent filled the air.

“It’s intense and delightful,” said Grainger. “When you smell it, your saliva flows.”

As picnic tables began to fill with plates from half a dozen Roman recipes—each with a version flavored with Ferula drudeanaand one flavored with silphion’s ancient replacement, asafoetida—a crowd including the botanical garden’s directors and staff and Miski’s students gathered around for samples. A bowl of aliter lenticulum, lentils made with honey, vinegar, coriander, leek, and Ferula drudeana, was deemed complex and delicious, while the same dish made with pungent asafoetida resin provoked grimaces and was left largely untouched. Squash sautéed with the plant’s grated root was also eaten with gusto, as was a delicate dish of prawn dumplings referred to in Apicius as isicia, dipped in the laseratum sauce. The biggest success, though, was ius in ouifero fervens, a sauce for lamb made with sweet wine and plums spiced with an ample dose of Ferula drudeana.

(Video) 2000 Year Old Plant Revived

“It’s beautiful!” said Grainger, as she rested in a lawn chair after a long day on her feet. “Even though the sauce is rich and dense, the flavor of the silphion isn’t buried by the fruits and spices. It has this intense ‘green’ flavor that actually brings out the qualities of the other herbs in the sauce.” A version made with asafoetida was obnoxiously pungent. It was obvious Grainger believed Ferula drudeana had great gastronomic merit and was a good candidate for being the long-lost plant of the Greeks and Romans.

Miski seemed pleased with the results of Grainger’s experiments, and surprised by the taste, though he confessed he was concerned about what might happen next.

“There are only 600 individual plants we know of in the whole world,” he pointed out. Three hundred of them grow in the wild. An equal number are now being grown from seed in the botanical gardens, though it will take several years before any of them are mature enough to produce fruiting bodies. “You’d have to grow a thousand times as many plants to produce a commercial supply.”

Two thousand years after the original supply of silphion was cut off, the legendary plant may have reemerged only to face a threat from its ancient nemesis: human appetite. For the time being, numbers are so low that Ferula drudeana officially qualifies as a critically endangered species.

“That’s what’s stressing me out,” says Miski, a genuine note of alarm in his voice. “If everyone starts making silphion sauce, wait! We’re not going to have enough to go around.”

Taras Grescoeis the author of Straphanger and seven other non-fiction books. His next book, The Lost Supper: Why the Future of Food Lies in the Past, will be published by Greystone in 2023.Follow him on

Twitter

and learn more about his writing onhis website.

Alice Zoois a documentary photographer whose work explores ideas of ritual and meaning. She recently photographed a story for National Geographic Magazine on Stonehenge and the Neolithic building boom. See more of her work on her website and onInstagram.

The National Geographic Society, committed to illuminating and protecting the wonder of our world, has funded Explorer Nirupa Rao’s work as a botanical illustrator since 2016. See more of her work on her website and on Instagram.

FAQs

Did the Romans make a plant go extinct? ›

Due to the overwhelming demand for silphium, its numbers rapidly dwindled, and by the 2nd century BC, the plant was considered extinct. While we don't know exactly why silphium disappeared, there are several theories. Some evidence suggests that the plant was gathered too extensively by the Romans.

Can you still get silphium? ›

Roman author and naturalist Pliny the Elder (23/24–79 AD) wrote that within his lifetime, only a single stalk of the plant could be found. It was harvested and given to the emperor Nero as a novelty around 54–68 AD. Sadly, silphium is nowhere to be found today.

What are extinct plants? ›

Extinct plants tell us a lot about history and evolution.

Franklinia alatamaha. Most plants have gone extinct through events beyond human control. But for the past two centuries, plants have been victims of habitat destruction. Here are 10 historic plants that have gone extinct—whether recently or long, long ago.

What was silphium used for? ›

Silphium (also known as silphion, laserwort, or laser) is an unidentified plant that was used in classical antiquity as a seasoning, perfume, aphrodisiac, and medicine. It also was used as a contraceptive by ancient Greeks and Romans.

Can extinct plants be brought back? ›

Cloning is a commonly suggested method for the potential restoration of an extinct species. It can be done by extracting the nucleus from a preserved cell from the extinct species and swapping it into an egg, without a nucleus, of that species' nearest living relative.

Can we revive extinct plants? ›

“In principle, resurrection genomics can be used to revive extinct species or populations. There is actually an interest in this area. However, dinosaurs are probably not possible—but certainly plants, if we have seeds, or even bacteria or other microbes are possible,” said Purugganan.

Where do you find silphium? ›

The American silphium species are large flowering perennials that grow in moist areas across the eastern US from Texas north into Canada.

How did Romans prevent pregnancy? ›

In ancient Rome and Greece and the ancient Near East, women used an oral contraceptive called silphium, which was a species of giant fennel. They would also soak cotton or lint in the juice of this herb and insert it into their vaginas to prevent pregnancy.

What did Romans smoke? ›

According to botany, hemp and cannabis are the same plant and thus the ancient Greeks and Romans must have used it in their daily lives. Cultures parallel to the ancient Greeks and Romans, like the Egyptians, Scythians, and Hittites, were known to use cannabis in their medicine, religion and recreational practices.

What are 2 extinct plants? ›

Lepidodendron plants were commonly known as the scale trees. They are an extinct genus of primitive, vascular, tree-like plants related to the isoetes and lycopsids.

What are 5 extinct plants? ›

Let's all hope that doesn't happen and while you're at it, read on to learn about 5 extraordinary plants that are now extinct.
  • Cooksonia, coastal areas around the world. ...
  • Silphium, Libya. ...
  • Araucarioxylon arizonicum, United States. ...
  • The Franklin Tree, United States. ...
  • Toromiro Tree, Easter Island.

Why do some plants become extinct short answer? ›

Habitat loss is the primary cause of higher extinction rates. Other causes include habitat changes, over-exploitation of wildlife for commercial purposes, the introduction of harmful nonnative species, pollution, and the spread of diseases.

Did Romans have condoms? ›

The condoms used in Ancient Rome were made of linen and animal (sheep and goat) intestine or bladder. It is possible that they used muscle tissue from dead combatants but no hard evidence for this exists. The archaic Djukas[1] tribe that inhabited New Guinea developed its own idea of the condom.

Does silphium prevent pregnancy? ›

Silphium belonged to the Ferula genus, whose plants contain a substance, ferujol, that in low doses is nearly 100 percent effective in preventing pregnancy in rats.

What plant does birth control come from? ›

Perhaps one of the most famous ancient forms of birth control was the silphium plant, native to North Africa. This plant was used as a contraceptive and was incredibly popular in ancient Greece and Rome. The plant could only be grown in a small area of what is now modern-day Libya.

What is the oldest plant ever? ›

The largest and oldest-known living plant on Earth has been discovered in Australia. Posidonia australis is an ancient and incredibly resilient seagrass that has been discovered in Shark Bay, Western Australia. It's at least 4,500 years old and spans 180km of shallow ocean.

Will the dodo bird come back? ›

The Dodo bird could be making a comeback hundreds of years after its extinction thanks to a DNA breakthrough. Scientists have been able to sequence the bird's entire genome for the first time after years of analysing preserved DNA from the bird.

How old is the oldest seed? ›

The oldest seed that has grown into a viable plant was a Judean date palm seed about 2,000 years old, recovered from excavations at Herod the Great's palace on Masada in Israel. It had been preserved in a cool, dry place, not by freezing. It was germinated in 2005.

Will extinct or alive come back? ›

It is hosted by conservationist and television personality Forrest Galante, who travels to different locations around the globe to learn about possibly extinct animals and whether or not there is a chance that they may still be extant.
...
Extinct or Alive
Original releaseJune 10, 2018 – present
15 more rows

Can extinct creatures come back? ›

It is impossible to bring extinct animals back to life exactly as they were, according to a study of the extinct Christmas Island rat.

Can we clone dodo birds? ›

Currently, without the ability to cryopreserve the cells of bird species and clone them later, there is no scientific failsafe for birds like there is for mammals in case of genetic bottlenecks or critical endangerment.

Is there a plant called Mary? ›

Fuchsia 'Mary' (T)

What did silphium smell like? ›

Silphium features top notes of Silphium accord and Cistus. The heart notes are Cinnamon, Black Pepper, Tobacco, Ginger, Geranium and Clove. Base notes are Frankincense, Myrrh, Cedarwood and Leather. WHAT IT SMELLS LIKE TO ME: Medicinal cotton.

Is there a heart shaped plant? ›

The Hoya kerrii is commonly called the Hoya Heart because of its green heart-shaped leaves. This single leaf cutting is a fun, whimsical way to show your plant love. It is partially rooted but does not have a node. It will stay as an adorable heart-shaped leaf for years to come.

Does lemon juice prevent pregnancy? ›

While the authors of the Krest Bitter Lemon study suggested its use as a postcoital douche, it is unlikely to be effective as no published studies have been done on the effectiveness of lemon juice preparations in preventing pregnancy, though they are advocated by some as a 'natural' spermicide (Short et al., 2004).

How can I use lime to prevent pregnancy? ›

Lime juice has been described as a natural spermicide; a contraceptive substance that reduces sperm concentration to prevent pregnancy [14], lime juice also alters oestrus cycle by significantly prolonging the diestrus and oestrus phases, thus exert an anti-fertility effect [15] .

How long have condoms been used? ›

The first condoms

The first documented use of a condom in Europe was in 1564 by the anatomist Fallopia (who also gave his name to fallopian tubes). In the 16th century condoms were used primarily to prevent STDs. Syphilis, for example, was often fatal and raged through Europe for over 300 years.

Why do Greek people smoke so much? ›

Greeks have strong cultural associations with smoking. It is associated with friends, pleasure, and relaxation. Smoking is an accepted tradition, so there is little discussion about motivation or social pressure to quit.

Do Greek people smoke? ›

According to a survey published by the European Commission Day for World No Tobacco Day in 2017, 37% of Greeks are smokers and only 44% of Greeks have never smoked a cigarette, the smallest percentage in the EU. After Greece, France and Bulgaria have the next largest number of smokers with 36%.

What drug did Romans smoke? ›

Drugs in ancient Rome were used for a variety of purposes. Cannabis and opium were used as medication to treat conditions such as insomnia or earaches. Roman doctors noticed the addictiveness of these drugs. They wrote that cannabis induced "a warm feeling" and opium was dangerous when diluted.

What plants have humans made extinct? ›

It also includes seven plants that are now considered “extinct in the wild,” meaning they only exist in botanical gardens.
...
How Many Plant Species Have Gone Extinct in North America?
Taxonomic nameCommon name (if known)
Crataegus delawarensis
Crataegus fecundaSt. Clair or fecund hawthorn
Crataegus lanuginoseWoolly hawthorn
62 more rows
16 Sept 2020

What is the #1 most endangered plant? ›

1. Prickly Cica. Also known as Encephalartos altensteinii, these cycads from South Africa are very slow-growing and are endangered plants. They can grow up to five to seven meters in height.

How many species went extinct since 2000? ›

According to IUCN data, for example, only one animal has been definitely identified as having gone extinct since 2000. It was a mollusc.

How many plants go extinct a day? ›

More recently, scientists at the U.N. Convention on Biological Diversity concluded that: “Every day, up to 150 species are lost.” That could be as much as 10 percent a decade.

How many species of plants are there 2021? ›

The scientists found that there are about 435,000 unique land plant species on Earth.

How did plants survive extinction? ›

Compared to animals, plants have an advantage in surviving mass extinctions. Plant seeds can remain dormant for many years in the soil. After the K-Pg mass extinction conditions were not right for plant growth, but plants could wait as seeds in a dormant state until things improve.

What does it mean if a plant or animal is extinct your answer? ›

Extinction of a particular animal or plant species occurs when there are no more individuals of that species alive anywhere in the world - the species has died out. This is a natural part of evolution. But sometimes extinctions happen at a much faster rate than usual.

How can we stop extinction? ›

5 Steps to Prevent Animal Extinction
  1. Buy Eco-Friendly Products.
  2. Follow The 3-R Rule: Recycle, Reuse, Reduce.
  3. Don't Buy Souvenirs Made From Endangered Species.
  4. Eat Less Meat.
  5. Spread Awareness: get involved.
25 Feb 2021

What religion doesn't use condoms? ›

The Roman Catholic church forbids contraceptive use because it is a sin against nature. Some Protestant denominations have allowed contraceptive use.

Does the Pope like condoms? ›

Pope Benedict XVI has said the use of condoms is acceptable in exceptional circumstances, according to a new book. He said condoms could reduce the risk of HIV infection, such as for a male prostitute, in a series of interviews given to a German journalist.

Does the Pope use condoms? ›

The Roman pontiff admitted that condom use is "one of the methods" which could prevent the spread of HIV, while talking to journalists aboard the papal plane on Monday.

What can a woman use to not get pregnant? ›

There are many methods of contraception you can choose from to avoid pregnancy. Condoms are the only method that helps protect against both pregnancy and sexually transmitted infections (STIs). It's difficult to know exactly when ovulation happens.

Can olives prevent pregnancy? ›

Eating handfuls of olives will not prevent pregnancy, but a chemical found within them can stop a sperm from reaching an egg. The natural compound, also found in grapes, Aloe vera, dandelions, and mangos, could replace the morning after pill if taken within five hours of unprotected sex.

What stops pregnancy permanently? ›

Female sterilisation is an operation to permanently prevent pregnancy. The fallopian tubes are blocked or sealed to prevent the eggs reaching the sperm and becoming fertilised.

Can I get pregnant on birth control? ›

Yes. Although birth control pills have a high success rate, they can fail and you can get pregnant while on the pill. Certain factors increase your risk of getting pregnant, even if you're on birth control. Keep these factors in mind if you're sexually active and want to prevent an unplanned pregnancy.

What does birth control put into your body? ›

The birth control pill (also called "the Pill") is a daily pill that contains hormones to change the way the body works and prevent pregnancy. Hormones are chemical substances that control the functioning of the body's organs. In this case, the hormones in the Pill control the ovaries and the uterus.

What was used for birth control before condoms? ›

condoms (external and internal) made of animal bladders, linen, silk, or plants. spermicides made of acacia, honey, rock salt, or crocodile dung. sponges made of moss, grass, or bamboo. vaginal douches or sponges soaked in oil, vinegar, lemon juice, or cedar oil — substances believed to slow or weaken sperm.

Why did plants go extinct? ›

The main cause of plant losses is the destruction of wild habitat to create farmland. Overharvesting of wild plants, building, invasive species, pollution and, increasingly, the climate crisis are also important causes of losses.

How did the Romans affect the environment? ›

Roman economic activity produced profound environmental impacts. Exploitation of forests, hunting and fishing, mining and metallurgy, pastoralism and agriculture, meant the transformation of major segments of the landscape.

What plants have humans made extinct? ›

It also includes seven plants that are now considered “extinct in the wild,” meaning they only exist in botanical gardens.
...
How Many Plant Species Have Gone Extinct in North America?
Taxonomic nameCommon name (if known)
Crataegus delawarensis
Crataegus fecundaSt. Clair or fecund hawthorn
Crataegus lanuginoseWoolly hawthorn
62 more rows
16 Sept 2020

Did plants go extinct? ›

A new study reveals that 65 plant species have gone extinct in the continental United States and Canada since European settlement, more extinctions than any previous scientific study has ever documented.

Why do some plants become extinct short answer? ›

Habitat loss is the primary cause of higher extinction rates. Other causes include habitat changes, over-exploitation of wildlife for commercial purposes, the introduction of harmful nonnative species, pollution, and the spread of diseases.

How did plants survive extinction? ›

Compared to animals, plants have an advantage in surviving mass extinctions. Plant seeds can remain dormant for many years in the soil. After the K-Pg mass extinction conditions were not right for plant growth, but plants could wait as seeds in a dormant state until things improve.

How many plants go extinct a day? ›

More recently, scientists at the U.N. Convention on Biological Diversity concluded that: “Every day, up to 150 species are lost.” That could be as much as 10 percent a decade.

What was religion of Romans? ›

The Roman Empire was a primarily polytheistic civilization, which meant that people recognized and worshiped multiple gods and goddesses. Despite the presence of monotheistic religions within the empire, such as Judaism and early Christianity, Romans honored multiple deities.

What broke the Roman Empire? ›

Invasions by Barbarian tribes

The most straightforward theory for Western Rome's collapse pins the fall on a string of military losses sustained against outside forces. Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire's borders.

How hot was the Roman Empire? ›

With the exception of the Aegean data, the results all show distinct warming during the Roman period from 0 CE to 500 CE, when temperatures were about 2 degrees Celsius (3.6 degrees Fahrenheit) higher than the average for Sicily and western Mediterranean regions in later centuries, and much higher than present-day ...

What animals went extinct in 2000? ›

The Pyrenean ibex (Capra pyrenaica pyrenaica) is one of two extinct subspecies of the Spanish ibex. It was declared extinct in 2000, although what caused its extinction remains unknown.

What are 2 extinct plants? ›

Lepidodendron plants were commonly known as the scale trees. They are an extinct genus of primitive, vascular, tree-like plants related to the isoetes and lycopsids.

How many species went extinct since 2000? ›

But compared to the number of species which exist in the world, even taking the lowest estimates of that number, such known cases are very few. According to IUCN data, for example, only one animal has been definitely identified as having gone extinct since 2000.

What was the first extinct plant? ›

Archaefructus
Archaefructus Temporal range: Early Cretaceous
Family:†Archaefructaceae Sun, Ji, Dilcher, Zheng, Nixon & Wang
Genus:†Archaefructus Sun, Dilcher, Zheng & Zhou
Species
†Archaefructus eoflora †Archaefructus liaoningensis †Archaefructus sinensis
6 more rows

How many plants are left in the world? ›

There are an estimated 320,000 plant species in the world. The vast majority of these are vascular plants. Although it is impossible to know the number of individual plants in the world, a recent study published by Nature Journal puts the number of trees at over 3 trillion.

How many plants have humans gone extinct? ›

Humans have driven nearly 600 plant species to extinction since 1750s.

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