Where did zombies come from?

The word 'vampire' appeared in the English-speaking world in the 1730s

However, earlier mentions of creatures with similar characteristics existed throughout Medieval Europe. For example, people often spoke of revenants—restless dead creatures who tormented the living. Historians believe these stories grew in popularity in part because of influence from the Catholic Church, which was emphasizing the idea of purgatory. These older revenant stories eventually influenced modern vampire folklore.

HIV originated in Central and West Africa from a virus in chimpanzees

Researchers believe the virus crossed from chimpanzees to humans through bushmeat practices in the early 20th century, with genetic studies suggesting the most recent common ancestor of the HIV-1 M group, which is responsible for the global AIDS pandemic, emerged around 1910–1930 in Léopoldville (now Kinshasa) in the Belgian Congo.

Cordyceps: the fungi that turn ants into zombies

The hit show (and video game) "Last of Us" was inspired partly by real-life species of fungi that have been known to turn ants into zombies. Spores of the Cordyceps fungi are capable of penetrating the exoskeletons of arthropods, after which they break into enzymes and proliferate within the body. The fungal cells then hack the ant's nervous system and trigger compulsive climbing.

Horror evolved from Gothic literature

Although creepy tales can be found in nearly every folk tradition, the roots of modern horror can be traced back to Gothic literature, which focused on the battle between humans and unnatural, evil forces.

Zoonotic diseases: Pathogens that jump from animals to humans

Such diseases may be caused by a variety of pathogens—viruses, bacteria, fungi, or parasites—and can originate in creatures ranging from ticks and mosquitoes to pigs and bats. Because they develop in animals and are often new to human immune systems, zoonotic diseases have severe consequences for public health.

One doctor argued vampires were based on a real disease

At a conference in 1985, Canadian biochemist David H. Dolphin posited that stories of vampires and werewolves had a real-world origin. He argued that porphyria could have caused sufferers to seek out blood, as well as experience light sensitivity and an aversion to garlic. More than one article in the 1990s discredited this take.

Watch how viruses like Ebola can spill over from animals to humans—and vice-versa.

The Ouija board originated in 19th-century America

The bizarre board game that helps people communicate with the dead at sleepovers first emerged in the 19th century as a business-minded response to the growing fascination with spiritualism. The Ouija Board has since generated an abundance of sales, as well as scientific research.

Ghost stories across cultures often trace back to traumatic events

From a bat-like demon in Tanzania to a malevolent woman figure hovering above your sleeping body, the four disturbing tales outlined in this NPR article offer a glimpse into how happenings from WWII or the Aztec Empire haunt people’s memories.

Halloween originated with the Celtic festival of Samhain

Halloween, a holiday primarily popular in the US and Canada, originated 2,000 years ago with the Celtic people. The Celts interpreted this transition as when ghosts returned to the land of the living, leading to rituals like feasts, bonfires, and wearing costumes made of animal body parts on Oct. 31.

The colonial origins of Haiti/Dominican Republic divide

This 16-minute video explores the colonial origins of the modern-day split between Haiti and the Dominican Republic. Haiti previously was the French-Caribbean colony of Saint-Domingue, which was torn off the Spanish colony of Santo Domingo in 1697....

Watch Cordyceps, a parasitic fungus, turn an ant into a ‘zombie’

This National Geographic TV clip shows how a parasitic Cordyceps species—sometimes colloquially called the “zombie ant fungus”—controls an ant’s behavior and kills its host. The fungus can rapidly wipe out entire insect colonies.

Cultural norms about how to handle the bodies of loved ones have hampered Ebola responses in West Africa.

Here's how humans migrated across the world

From our deepest origins in Africa all the way to the Americas, by looking at the fossils and archaeological materials we have been able to trace the path our ancestors took during thee short window of time when we took over the world.

What are zoonotic diseases?

Interspecies interactions are a breeding ground for disease transmission. This basic background information on zoonotic disease from the Centers for Disease Control and Prevention (CDC) chronicles the different ways humans can get sick, identifies what groups are particularly vulnerable, and offers links to other resources.

What ghosts eat around the world

This Thrillist article compiles a rich assortment of cultural beliefs and practices surrounding food for the dead. From Bengali folklore to Ancient Greek mythology, peruse through the different ways in which cultures around the world use food to maintain connected to the deceased.

Rapping has roots in numerous aspects of the Black oral tradition

Although “rapping” began in New York with hip-hop in the early 1970s, it can be traced back to griots, who were storytellers in West Africa, and “toasting,” which was a similar talk-sing style practiced by dancehall DJs in Jamaica.

The history of coffee

From its likely origins in what is now Ethiopia to today's worldwide consumption, this video uses a map to show how coffee conquered the world. Follow along and see how pilgrimages and centuries of trade influenced the spread of the beverage we all know so well.

The history of ghosts, explained

The afterlife has perplexed humans across different periods, cultures, and belief systems. The desire to understand what comes next is often explored through the telling of ghost stories. Learn more about the spooky phenomena here.

The ‘Universal Monsters’ series solidified horror as a film genre

Before 1931, most scary movies were billed as “mystery” or “suspense” with grounded explanations for anything "supernatural." That changed with “Dracula,” which presented the character as a real vampire who drank victims' blood. Universal continued adapting similar titles, including HG Wells’ “The Invisible Man” and Edgar Allan Poe’s short stories.

Watch the history of human migration that led to civilizations

Starting in Africa where they hunted with spears and fires, humans would gradually move out of the continent over thousands of years as they navigated crossing deserts, rivers, uneven terrain, and shifting climates. Development of technology, language, farming, and other societal structures helped build up the first civilizations.

How a scientist discovered West Nile is spread by birds

Listen to Tracey McNamara, former chief pathologist at the Bronx Zoo, detailing her surprising late 1990s discovery that established West Nile virus is spread by birds. Financing animal disease surveillance studies, she says, saves human lives and surveillance gaps may fuel missed opportunities to identify dangerous diseases before they jump between species.

The messy story of humanity's genealogical past

For decades, scientists viewed the human fossil record and concluded Neanderthals, an early hominin, came before homo sapiens, or modern humans. The story became more complicated as technology advanced and ancient DNA samples were analyzed. This video breaks down the evidence, concluding the development of humanity was a lot messier than previously believed.

Vampire bats are the only mammal to feed exclusively on blood

Scientists believe their ancestors may have eaten parasites and insects off larger animals until vampire bats started feeding directly from those animals. Colonies work together to stay fed, as a vampire bat can die without just two days of eating.

Three Ebola species are responsible for most large outbreaks of the disease.

Increasing contact between humans and wild animals is driving zoonotic threats

Zoonotic diseases, which spread from animals to humans, present one of the most significant emerging threats worldwide. Scientists have identified around 200 viruses capable of infecting humans, and unfortunately, the number of such diseases are on the rise—at least 60% of all emerging infectious diseases are zoonotic in origin.

How humans evolved from single-cell organisms

Humans have had a long history. 3.8 billion years in the making, to be precise. From the primordial puddle to the modern day, here's how humans have evolved from the first life.

See how Ebola tore through Guinea, Sierra Leone, and Liberia in 2014-16.

Cholera went global thanks to global trade

The first cholera pandemic grew from an outbreak in India, in 1817. Scientists suggest it spread from there throughout the continent and onward to Africa, Russia and Europe through the poop of traders.

Ebola species have historically been named after the places where they were discovered, stigmatizing residents of those areas, including Bundibugyo, in Uganda.

Day of the Dead is celebrated across the world

While almost all celebrations involve cemeteries and altars, many countries also have their own unique traditions, including Bolivia’s staircase-shaped bread to help lead souls to heaven, and Haiti’s voodoo-influenced rituals.

The Zulu krewe dons black face paint, but says it's not blackface

The majority Black organization was founded in the early 1900s, when Mardi Gras was still segregated. They painted their faces black, both to comply with the Mardi Gras rule requiring masks and to reenact a vaudeville sketch. In recent years, their facepaint has been criticized by some as a form of Jim Crow minstrelsy.

Watch a breakdown of the canine family tree that explains how foxes and wolves are related to our beloved household pets, like poodles and dachshunds.

Genetic analysis suggests Anopheles mosquitoes fed on humans some 1.8 million years ago.

The American cockroach is actually from Africa—an apparent hitchhiker aboard ships carrying enslaved people—with evidence suggesting it may have arrived in the New World as early as the 1600s.

The human cost of creating medieval monsters

The concept and creation of monsters have been used since time immemorial to communicate social norms and the consequences of breaking them. Some so-called monsters were judged as such solely due to having features that would be considered birth defects in modern times. This in-depth article explores the human cost of creating medieval monsters, many of whom were defined by a physical appearance that deviates from the expected.

A deep dive into how a body decomposes

Dead bodies are, understandably, scary and unsettling. Learn about the fascinating process of decomposition that takes place in every human, and how its teeming with life.

How a worm helped give the southern US its reputation

"The germ of laziness" that blanketed the southern US for centuries with unshakable fatigue, brain fog, and distended bellies paired with emaciated frames was actually a worm. This parasitic worm lives in the gut, where it can stay up to five years, laying up to 10,000 eggs daily. Hundreds of millions of people worldwide continue to suffer from hookworm infections, often obtained by walking barefoot across infected soil.

Visualizing the spread of five major religions across the world

Every major religion has a story that started in a specific place before growing to reach millions. This quick video depicts an illustrated map over the last 5,000 years, showing how Hinduism, Buddhism, Judaism, Christianity, and Islam grew from their humble beginnings.

Chimpanzees are dying from human colds

For some great apes, the threat of human-borne diseases outweighs poaching or habitat loss. This article details the danger of reverse zoonoses, which refers to diseases that spread from humans to animals.

The coronavirus likely came from China’s wet markets

A wet market is a type of marketplace primarily selling fresh, perishable goods such as meat, fish, and produce, often in a non-supermarket environment. The term originated in Singapore during the 1970s, and the "wet" aspect refers to the wet floors resulting from the washing of stalls and the use of ice to keep food fresh. Such markets have been identified as a major source of zoonotic outbreaks, including the COVID-19 pandemic.

Scientists have struggled to pin down Ebola's natural reservoir species for decades, but the available evidence suggests that it's very likely fruit and insect-eating bats found in Africa.

The science behind ghosts, explored

Every culture has them—restless spirits, haunted houses, things that go bump in the night. But why do we believe in ghosts? Psychologist and skeptic Dr. Chris French joins host Sony Kassam to explore the science behind the supernatural, from sleep paralysis and hallucinations to the brain’s pattern-making instincts.

The medieval origins of Māori and Moriori culture

New Zealand, also known as Aotearoa, was one of the last large land masses inhabited by humans. This 18-minute video explores the ancient origins of Polynesian people and their medieval journey to New Zealand and the nearby Chatham Islands archipelago.

How we helped make Aedes aegypti mosquitoes such a problem

Mosquito genome sequencing data suggests that Aedes aegypti mosquitoes first started specializing on human blood around 5,000 years ago—when climates shifted and humans started domesticating plants in Africa and stored large amounts of water that may have attracted the bugs.

How the most famous Ebola book, The Hot Zone, which sold 3.5 million copies and was translated into 30 languages, got aspects of the disease so wrong.

Ebola virus, with an average fatality rate of around 50%, has been responsible for more than 2,000 confirmed deaths during the 2026 outbreak in the Democratic Republic of the Congo and Uganda.

There have been close to 40 Ebola outbreaks since 1976

Ebola is a rare but deadly virus that causes severe illness, organ damage, and sometimes internal bleeding. It spreads through contact with infected bodily fluids and is most common in parts of sub-Saharan Africa. This explainer covers its symptoms, transmission, and treatment options.

Where do phobias come from?

Scientists say phobias are extreme version of a primitive evolutionary mechanism that tells us when danger is near or we are in a dangerous situation. A number of brain regions work in concert to trigger flight or fight responses, and with some...

That time British slavers killed enslaved people and filed for insurance reimbursement

In 1781, a British slave ship tossed 132 enslaved Africans overboard, leaving them to drown. This 52-minute podcast explores the context behind the massacre and its implications. The slavers of the ship named Zong sought insurance reimbursement for...