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The new study suggests that 73 million years ago, birds and dinosaurs lived side by side in the Arctic.

Scientists Find the First Evidence of Birds Nesting in the Arctic Alongside Dinosaurs

The researchers analyzed rare fossils of hatchling birds found in northern Alaska, which offered the earliest evidence of the creatures reproducing in a polar region

This skull of a 1.8-million-year-old Paranthropus robustus individual was unearthed in South Africa, but it was not one of the fossils included in the study.

Scientists Investigate 2.2-Million-Year-Old Tooth Enamel to Unravel the Mysteries of Ancient Human Relatives

By studying proteins preserved in teeth, researchers determined the sex of four Paranthropus robustus individuals that lived in southern Africa

Noctilucent clouds over the Baltic Sea, as seen from Germany in 2019. Typically seen in polar regions, the clouds are increasingly appearing at mid- and low latitudes.

NASA Wants Your Help to Study These Rare, High-Altitude Clouds That Appear to Glow at Sunrise and Sunset

Noctilucent clouds usually form close to the poles, but in recent decades, they’re being spotted closer to the Equator

A little brown bat (Myotis lucifugus) is seen with white fuzz on its nose, a characteristic of the deadly white-nose syndrome.

A Fungal Disease Ravaged North American Bats. Now, Researchers Found a Second Species That Suggests It Could Happen Again

White-nose syndrome caused millions of bat deaths, and scientists are sounding the alarm that a second fungus could be disastrous if it reaches American wildlife

An artistic reconstruction of the extinct megalodon. Scientists' ideas about how the megalodon looked are based on its fossilized teeth.

The Fearsome Megalodon Ate Basically Whatever It Wanted to Reach Its Daily 100,000-Calorie Need, Study Suggests

Scientists previously assumed the giant, prehistoric sharks mostly feasted on whales, but it turns out they probably weren’t so picky

Geoscientist Martin Köhler stands in front of Maka Lahi, which measures 46 feet by 39 feet by 22 feet—about the same size as a two-story house.

A 164-Foot Tsunami Pushed This Enormous Boulder Atop a Cliff in Tonga 7,000 Years Ago

The hulking rock, called Maka Lahi, is the size of a two-story house and sits on a 120-foot-tall cliff, covered in vegetation

The five dwarf planets recognized by the International Astronomical Union are Pluto, Ceres, Eris, Haumea and Makemake—and these are pictured with 2017 OF201 in a telescope image.

Astronomers Discover a Possible Dwarf Planet Far Beyond Neptune, Where There Should Have Only Been Empty Space

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region thought to be largely devoid of objects

Researchers revealed that differences in sloth habitats drove the wide variation in size seen in extinct species.

Giant Sloths the Size of Elephants Once Walked Along the Ground. Here’s How the Massive Animals Evolved and Declined

Researchers analyzed fossils and DNA to get a big-picture view of sloth evolution and determine what drove their immense size variation

Bedbugs that feed on humans experienced a sharp rise in numbers after the development of the first cities, according to new research.

Bedbugs Could Have Been the First Urban Pest to Plague Human Cities, New Study Suggests

Scientists examined the genomes of two bedbug lineages to trace how their population sizes have changed over time

Stone Age humans were likely scavenging the remains of whales that washed ashore along the Bay of Biscay and fashioning them into tools. This projectile point made from a gray whale bone was found in Landes, France, and dated to between 17,500 and 18,000 years ago.

Scientists Discover the Oldest Known Tools Made From Whale Bones, Crafted in Western Europe 20,000 Years Ago

Stone Age humans scavenged the skeletons of several whale species along the Bay of Biscay in what is now southwestern France and northern Spain, according to a new study

The men summited Mount Everest just five days after leaving the United Kingdom.

Climbers Summit Mount Everest in Five Days Using Controversial Xenon Gas

The four British former special forces soldiers left the United Kingdom on May 16. By 7:10 a.m. on May 21, they were standing at the top of the 29,032-foot-tall peak

A study participant puts in a contact lens. Researchers developed lenses with nanoparticles that convert infrared wavelengths into visible light that humans can perceive.

New Contact Lenses Give Users Super-Vision to See Infrared Light—Even With Their Eyes Closed

Researchers have developed experimental contact lenses that use nanoparticles to convert the invisible wavelengths of near-infrared light into visible colors

Anna's hummingbirds seem to be thriving amid urbanization in California, even as other hummingbird species have declined due to human activity.

California’s Hummingbirds Have Changed Their Beaks in Response to Backyard Feeders, Study Finds

With plenty of artificial nectar available, Anna’s hummingbirds have expanded their range northward and their beaks have tended to become longer and larger

A research team measured ammonia concentrations from a colony of 60,000 Adélie penguins.

Penguin Poop Helps Drive Cloud Formation Over Antarctica, According to a New Study

The ammonia from Adélie penguin guano reacts with sulfur-containing gases in the atmosphere to aid in forming clouds, which scientists say may be significant to regulating the climate

A group of female South Korean free divers on Jeju Island, known as the Haenyeo, exit the water after catching marine snails in November 2015.

South Korea’s Female Free Divers May Have Evolved to Thrive Underwater, Study Finds

The Haenyeo, a group of skilled divers on Jeju Island, plunge beneath the ocean’s surface without any breathing equipment, thanks to a combination of their training and genetics

Cooper's hawks are skilled hunters that feast on small and medium-sized birds.

A Young Cooper’s Hawk Learned to Use a Crosswalk Signal to Launch Surprise Attacks on Other Birds

Researcher Vladimir Dinets watched the bird repeatedly sneak behind a row of cars to ambush its unsuspecting prey

Researchers have used genomic sequencing to trace what they’re calling the “longest migration out of Africa.”

New Research

Scientists Use DNA to Trace Early Humans’ Footsteps From Asia to South America

Over thousands of years, humans from Eurasia trekked more than 12,400 miles to eventually reach the southernmost tip of South America, a new genetic investigation suggests

An artistic rendering of an early vertebrate being attacked by a sea-scorpion in dark waters

Our Teeth May Descend From Sensitive Bumps on Prehistoric Fish Armor, New Research Finds

Hundreds of millions of years ago, fish had sensory features on their exoskeletons that contained dentine, the material that makes our teeth sensitive today

In recent years, Barbie dolls have become more likely to have flat feet, new research finds.

Barbie’s Feet Have Become Less Arched Over Time, According to a New Study by Podiatrists

By the 2020s, only 40 percent of Barbie dolls were designed with permanently arched feet for wearing high heels

A tsunami might have occured some 115 million years ago, near where deposits of Cretaceous amber were found in Japan.

This Deposit of ‘Weird’ Cretaceous Amber Could Reveal Hints to Long-Forgotten Tsunamis in Japan

A new study highlights the potential of amber fossils to capture evidence of powerful, prehistoric ocean waves

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