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Evolution

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This Could Be the Oldest Flowering Plant Ever Found in North America

A new look at Smithsonian’s fossil collection turned up a remarkably ancient flowering plant—scientists think it’s at least 115 million years old

One species ant can build floating rafts (above), resilient bridges and temporary shelters using nothing but their own bodies.

Watch Fire Ants Use Their Bodies To Form Living Architecture

One species of ant can build floating rafts, resilient bridges and temporary shelters using nothing but their own bodies

The seahorse may appear ungainly, but it’s actually a sophisticatedly engineered copepod-killing machine.

The Seahorse’s Odd Shape Makes It a Weapon of Stealth

The shape of the seahorse’s snout and its painfully slow movements create help create minimal water disturbance, increasing its odds of bagging prey

A friendly garter snake

Mating Snakes Engage in a Literal Battle of the Sexes

Male and female red-sided garter snakes have antagonistic genitals, evolved to further the interests of their respective gender

CT scans (left) and photos (right) of the skull

This Fossil Skull Unearthed in Tibet Is the Oldest Big Cat Ever Found

The fossil belongs to a newly discovered species called Panthera blytheae and is between four and five million years old

A computer rendering of the ancient froghoppers mating

These Insects Died While Having Sex 165 Million Years Ago

A remarkable fossil from China captures two froghoppers copulating, showing how the insects’ genital structures haven’t changed despite time’s passage

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What Is a Species? Insight From Dolphins and Humans

More than 70 definitions exist for what makes a species—each is applied to a different group of organisms & uses different methods for determining a label

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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 Issus coleoptratus 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.

Cracking the Code of the Human Genome

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?

Cracking the Code of the Human Genome

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

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