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Human Evolution

The brain is a glutton for glucose, broken down from carbohydrates, which often come from starchy or naturally sweet foods. 

Meat Wasn’t the Only Food That Drove Early Humans to Evolve Bigger Brains. Sugar May Have Fueled the Organ’s Enlargement, Too

Scientists examined four million years of hominin diets. They found that natural sugars may have supplied energy—in the form of glucose—to growing brains before cooking made starchy foods easier to digest

The belly is one of the most ticklish body parts across analyzed cultures.

From Armpits to Feet, Our Ticklish Hot Spots Are Surprisingly Universal. The Finding Offers Clues About the Sensation’s Evolutionary Origins

A new study probes the basics of gargalesis, a poorly understood type of tickling caused by firm, repetitive touches that typically elicits laughter and squirming

A new study, which has not been peer reviewed, suggests Denisovans might have towered over their ancient hominin peers.

Thousands of Years Ago, Denisovans Might Have Been Huge, Especially Compared to Their Archaic Human Neighbors

New research offers rare insight into our extinct cousins who lived in Asia and who may have towered over petite “Homo erectus”

Some modern humans might be taller and more muscular because of a Neanderthal-derived gene variant that affects the growth hormone pathway.

Got a Brawny Build? You Might Be Able to Thank Your Neanderthal Ancestors, According to a New Study

New research hints that some living people inherited a gene variant from Neanderthals that has made them slightly taller and more muscular than their peers

Previous research hinted at ghost ancestry in our DNA, but the new work helps pinpoint the timeline of when the ancient relatives' genetic material entered our genomes.

Traces of Two Extinct ‘Ghost’ Ancestors Were Found Hiding in Modern Human DNA, Hinting at Our Extremely Complex Family Tree

Researchers used a new method to investigate past interbreeding with Homo sapiens that doesn’t require ancient DNA. The technique identified areas of living humans’ genomes that came from unknown hominins, including one from a 1.8-million-year-old lineage

An overview of the excavated track surface with a mix of deeper hippopotamus and antelope footprints and shallower hominin tracks visible

Ancient Fossil Footsteps Found in Kenya May Hint That an Early Human Relative Was Larger Than Previously Thought

The trackway sheds light on how some hominins moved around their environments and with one another

Male chimpanzees were more likely to exchange friendly touches with other males—like Little Jake and Little Joey shown here.

Chimpanzees and Bonobos Use Hugs, Kisses and Friendly Pats to Keep the Peace, Just Like Humans, a New Study Suggests

Since all three ape species diverged from a common ancestor that lived roughly six million to eight million years ago, the findings hint that friendly touching to diffuse tension has deep evolutionary origins

This map shows modern languages and their risk of dying out. 

Three Millennia Ago, Humans May Have Spoken Thousands More Languages Than We Have Today, During a Linguistic ‘Golden Age’

A new study suggests linguistic diversity reached its peak between 1000 B.C.E. and 1000 C.E. before declining

Handedness refers to both hand preference and hand dominance. 

People Aren’t Born as Righties or Lefties—They Develop Hand Dominance With Practice, a New Study Suggests

Humans do have a biological preference for using one side of their body, which might prime them for using limbs on that side for complex motor tasks like writing—and honing those skills over time

Researchers found evidence that the wound healed.

Roughly 100,000 Years Ago, This Man Got Stabbed in the Face—and Survived. He’s Likely One of the First Known Victims of an Attack With a Sharp Weapon

Researchers who investigated the remains of a young adult male found in the Qafzeh cave say the injury healed over time, which means the victim’s community may have tended to him

Researchers discovered that Neanderthals and Homo sapiens appeared to collect the same type of snail shell, possibly for ornamental or symbolic purposes.

Our Ancestors Loved Shell Trinkets, Just Like Neanderthals. New Research Suggests It’s a Sign of Shared Culture Across Species

Based on artifacts found in a limestone cave on the Mediterranean coast, scientists think the two species might have shared similar survival strategies, stone tool technologies and symbolic traditions

Homo floresiensis (center) had a skull about the size of a grapefruit and stood a little more than three feet tall.

How a Hungry Komodo Dragon Led Scientists to Determine Our Small, Hobbit-Like Cousins Probably Weren’t That Smart After All

New research indicates “Homo floresiensis” probably wasn’t hunting big game or using fire on Flores Island, suggesting the small-brained species wasn’t quite as “behaviorally advanced” as once hypothesized

Bonobo male Kikongo making 'happy' grin faces at the Lola ya Bonobo Sanctuary, Democratic Republic of Congo, October 2010

Humans and Great Apes Giggle With a Similar Rhythm and Timing, Suggesting We Have Shared Our Style of Laughter for 15 Million Years

Understanding how laughter evolved can reveal the secrets of human speech

Scientists collected samples from 11 caves in Spain and Portugal.

In a Scientific First, Researchers Recovered Ancient DNA That Humans Left Behind on Rock Art and Cave Walls

DNA preservation on cave walls is highly variable, but scientists say their work is an important step on the path toward gaining a deeper understanding of our creative ancestors

Modern humans and our relatives have occupied Wonderwork Cave in South Africa for around two million years.

Early Humans May Have Used Fire 1.8 Million Years Ago, Nearly Doubling the Age of the Oldest Known Evidence for the Feat

In Wonderwerk Cave in South Africa, burned bones were found in a dirt layer associated with Homo erectus. The inhabitants probably hadn’t mastered fire-making, but researchers say they may have moved and maintained flames from a natural fire

A fossilized Homo naledi skull

New Research

Did These Prehistoric Primates Really Bury Just Their Female Dead Deep in a Cave?

Researchers say that the fossilized bones of “Homo naledi,” so far found exclusively underground in South Africa, lack a key genetic male marker

In many animal species, males display showier features than females. Among humans, however, women are popularly described as the "fairer sex."

People Across Cultures Find Women’s Faces to Be More Attractive Than Men’s, a New Study Suggests

In many species of wild animals, males have flashier features than females to help them attract mates. But scientists have long noticed that humans seem to be an exception, with women often being considered the “fairer sex”

Chimpanzees, bonobos and gorillas tend to walk on their knuckles, while macaques and capuchins walk with flat palms.  

Did Human Ancestors Walk on Their Knuckles Like Today’s Chimpanzees? New Research Adds More Evidence to the Debate

After investigating thousands of wrist bones, scientists suspect the last common ancestor species of humans and chimpanzees may have navigated the world on its knuckles

Around 90 percent of people are right-handed.

Why Is Nearly Every Person Right-Handed—but Not Every Ape and Monkey? New Research Explores the Evolutionary Origins of Human Handedness

Brain size and bipedalism are the most likely drivers of our species’ right-hand dominance, according to new research

The procedure was likely extremely painful. But, afterward, the Neanderthal continued chewing with the tooth, which suggests they felt some relief.

New Research

Neanderthals Got Cavities, Too—and New Research Suggests They Drilled Into Their Teeth to Treat Them, Just Like Modern Dentists

Researchers unearthed a 59,000-year-old Neanderthal molar that shows signs of dental surgery, a discovery that pushes back the earliest evidence of dental work by roughly 45,000 years

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