Evolution

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This Mouse Has Evolved An Immunity to Toxic Scorpion Venom

The bark scorpion's sting can be deadly—but one of its predators, the grasshopper mouse, is impervious to both the pain and paralyzing effects of its venom

Giraffes hanging out on the savannah

Weather Prevents Different Giraffe Species From Interbreeding

In zoos, different giraffe species will readily mate, but if the species cross paths in Kenya, their rain-driven mating cycles won't be in sync

A new study shows that chimps make different warning calls based on the presence of other chimps, and keep sounding the alarm until their friends are safe.

Chimpanzees Intentionally Warn Their Friends About Danger

A new study shows that the apes make specific warning calls when near other chimps, and they keep sounding the alarm until their friends are safe

Can ancient skeletons teach us about our genetic past?

Ancient Skeletons Reveal Genetic History of Central Europe

The skeletons, between 7,500 and 3,500 years old, house DNA that trace waves of migrations from regions across Europe

An artist’s depiction of the newly discovered ice-rich, rocky asteroid that was ripped apart by the distant white dwarf star 200 million years ago.

Scientists Just Discovered Water Near a Star 170 Light Years Away

The water was once bound as ice in a small, rocky planet or asteroid that was destroyed 200 million years ago

When rains come, this curcurbit beetle is most definitely not looking for love.

Insects Are Less Randy in the Rain

Beetles, moths and aphids are markedly turned off by the hint of impending rain, likely an evolutionary adaptation to prevent them from getting washed away

This ancient fossil, just discovered in China, could upend our understanding of how all vertebrates evolved over time.

This 419-Million-Year-Old Fish Has the World’s Oldest Known Face

The ancient fossil, just discovered in China, could upend our understanding of how all vertebrates evolved over time

Spot the impostor: A cuckoo finch chick (left) and a tawny-flanked prinia chick (right) open their beaks for a meal.

Parasitic Cuckoo Finches Use an Egg Overload to Evade Host Defenses

The more eggs a parasitic cuckoo finch lays in its host's nest, the more likely a discerning foster parent will accept the finch's young as its own

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How One Moth Species Can Jam Bats’ Sonar Systems

Bertholdia trigona, a moth native to the Arizona desert, emits ultrasonic clicks at a rate of 4,500 times per second to blur bats' acoustic vision

The small hopping insect Issus coleoptratus uses toothed gears (magnified above with an electron microscope) to precisely synchronize the kicks of its hind legs as it jumps forward.

This Insect Has The Only Mechanical Gears Ever Found in Nature

The small hopping insect <i>Issus coleoptratus</i> uses toothed gears on its joints to precisely synchronize the kicks of its hind legs as it jumps forward

A colorized microscopic image of a viral particle of the Ebola virus. The virus, which scientists believe originates in non-human primates, causes Ebola hemorrhagic fever, a deadly disease in humans, monkeys, gorillas and chimpanzees.

A Minimum of 320,000 Mammalian Viruses Await Discovery

If we invested just $1.4 billion, we could discover 85 percent of all mammalian viruses, potentially lessening the impact of the next emerging disease

Unlike the chest-beating primates of popular imagination, Brazil’s northern muriquis are easygoing and highly cooperative.

Humans Would Be Better Off If They Monkeyed Around Like the Muriquis

Biologist Karen Strier has been studying these peace-loving Brazilian primates and their egalitarian lifestyle for decades

Could life on Earth have been born on Mars?

Did Life Come to Earth From Mars?

Mineralogical clues point to the idea that the early Earth, starved of oxygen and submerged by a vast ocean, needed molecules from Mars to kick start life

“I’d rather gnaw a bean than be gnawed by continual fear.”

Scientists Investigate Whether the City Mouse Is Smarter Than the Country Mouse

Contrary to biologists' expectations, critters living in cities don't always have an adaptive edge over their rural counterparts

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Why Do We Yawn and Why Is It Contagious?

Pinpointing exactly why we yawn is a tough task, but the latest research suggests that our sleepy sighs help to regulate the temperature of our brains

Our uncommon shoulder flexibility allows us to throw extremely fast, as compared to other primates—a trait we likely evolved two million years ago to aid with hunting.

How the Human Body Evolved to Throw Fastballs

Our shoulder flexibility allows us to hurl things at high speeds compared to other primates—a trait we likely evolved for hunting two million years ago

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Why We Should Study Cancer Like We Study Ecosystems

Like pine beetles sickening a forest as they spread, cancer can be seen as a disruption in the balance of a complex microenvironment in the human body

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Scientists Use Snails to Trace Stone Age Trade Routes in Europe

Why is a snail variety found only in Ireland and the Pyrenees? DNA analysis suggests that it hitched a boat ride with early travelers

Languages that evolve at high elevations are more likely to include a sound that’s easier to make when the air is thinner, new research shows.

Do Geography and Altitude Shape the Sounds of a Language?

Languages that evolve at high elevations are more likely to include a sound that's easier to make when the air is thinner, new research shows

The way a baby chimpanzee gestures to her mother resembles how a human infant interacts with its mother.

Gestures of Human and Ape Infants Are More Similar Than You Might Expect

Comparing the body language of baby chimps, bonobos and humans suggests that gesticulation came first in the evolution of speaking

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