Smart News Science

In the new experiment, roosters made fewer alarm calls, meant to warn peers of predators, when placed in front a mirror versus when standing near another rooster.

Roosters May Recognize Their Reflections in Mirrors, Study Suggests

The findings demonstrate self-recognition could be more common among animals than previously thought

Artist Oscar Nilsson spent 400 hours working on the reconstruction.

See the Face of an Inca Teenager Killed in a Ritual Sacrifice 500 Years Ago

The mummified girl, known as "Juanita," was found in 1995 on Peru's Ampato volcano

Previous analyses of seismic activity on Mars suggested its core was surprisingly large, with a low density. Two new studies suggest the opposite.

Mars' Core May Be Smaller Than Thought, Wrapped in a Sea of Molten Rock

Based on seismic waves from a meteorite impact, two teams of scientists suggest the Red Planet has another layer deep beneath its surface

A chum salmon in Alaska's Katmai National Park and Preserve. Salmon numbers are declining in some places due in part to climate change.

Climate Change Is Pushing Salmon North in Alaska, Scientists Say

Researchers recently found about 100 chum salmon spawning in the Arctic, suggesting the species is shifting to new habitats

The female Pacific footballfish measured about 14 inches long.

Rare Deep-Sea Anglerfish Washes Up on a California Beach

The finding marks the second time in three years that an elusive Pacific footballfish has been found on the sand at Crystal Cove State Park

Aedes aegypti mosquitoes can spread dengue fever to humans via bites.

'Extremely Rare' Case of Locally Acquired Dengue Fever Detected in California

Officials say the risk of exposure to the virus, which is spread by mosquito bites, is very low for residents

The ship, Ruby Princess

Cruise Passengers Win Lawsuit After Covid Outbreak on Ship in 2020

The Ruby Princess, which launched from Australia in the early days of the pandemic, was linked to 662 cases of Covid-19 and 28 deaths

North Atlantic right whales face threats of entanglement in fishing gear and injuries caused by ships.

North Atlantic Right Whale Numbers May Be Stabilizing at Last

After a decade of decline, the latest population estimate is good news—but conservationists say we "have a long ways to go" to safeguard the marine mammals

Billions of periodical cicadas emerge every 13 or 17 years in the eastern United States, creating an all-you-can-eat buffet for birds.

Huge Cicada Broods Have Ripple Effects on Birds, Caterpillars and Trees

When Brood X emerged in 2021, scientists measured how the influx of billions of insects affected the ecosystem near Washington, D.C.

A leaf-eared mouse called Phyllotis vaccarum

Biologists Find 13 Freeze-Dried Mouse Mummies Atop Andean Volcanoes

These cold, arid and oxygen-poor summits are akin to conditions on Mars, prompting questions about how the rodents got there—and how they survived

Ice shelves are important because they help keep ice on land from flowing into the ocean as quickly.

Rapid Melting of West Antarctic Ice Shelves Is 'Unavoidable,' Study Finds

Even under a best-case climate scenario, global sea levels will likely rise because of this accelerated melting, scientists say

Caecilian mothers grow a fatty layer of skin that their babies tear off with specialized teeth and eat.

This Worm-Like Amphibian Eats Its Mother's Skin to Get Microbes

Caecilians are the only known amphibians to pass microbes from one generation to the next, according to a new study

Researchers recommend limiting red meat consumption to about one serving per week, based on the results of a new study.

Eating Red Meat Is Linked to Type 2 Diabetes Risk, New Study Finds

Reducing daily intake of beef, lamb and pork could reduce your risk of developing the disease, researchers say

Bobi now holds two records for the oldest living dog and the oldest dog ever.

Bobi, the World's Oldest Dog, Dies at 31

The long-lived Portuguese canine broke two world records and captured the hearts of people around the world

A photograph of the moon by the Apollo 17 crew on their return trip back to Earth. The new study analyzes material gathered from the lunar surface during the 1972 mission.

The Moon Is 40 Million Years Older Than Thought, Lunar Rock Samples Suggest

A new analysis of crystals from the moon pushes its age back to just 110 million years after the solar system formed

Alaska canceled its snow crab harvest for two seasons in a row.

Why Ten Billion Snow Crabs Disappeared Off the Coast of Alaska

The unprecedented die-off represents roughly 90 percent of the eastern Bering Sea population

NASA's InSight lander peers down at the Martian surface. The mission recorded more than 1,300 quakes during its four years of operation.

Mars' Most Powerful Quake Likely Triggered by Tectonic Forces

Researchers searched for signs of a meteorite impact that caused the quake but were unable to find any

Hops give beer its bitter taste and aroma.

Hoppy Beer Could Be Climate Change's Next Victim

Warming temperatures and drier conditions in Europe could continue to lead to declines in hop yields and hop quality, a new study finds

These blue and white layers make up crystallized sugar syrup.

These Ten Stunning Images Prove That Small Is Beautiful

Selects from Nikon’s Small World Photomicrography Contest capture the elegance of insects, slime molds and more

The Orionid meteor shower over the Songhua River in Daqing City, China, in October 2020. 

Here’s How to Watch The Orionid Meteor Shower This Weekend

The celestial show will peak on the night of October 21 to 22, with around 23 meteors expected per hour

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