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hundreds of mound-shaped stromatolites in shallow water

Oceans

Before altering the air, microbes oxygenated large swaths of the sea

Hundreds of millions of years before oxygen surged in the atmosphere 2.4 billion years ago, swaths of oxygen winked in and out of existence in the ocean.

By Nikk Ogasa1 hour ago

The small British island of Saint Michael's Mount pictured from a nearby beach, with trees and buildings dotting the small island in golden light

British tin might have fueled the rise of some Bronze Age civilizations

By Bruce Bower16 hours ago

Black and white image of 3 zoomed in cilia with their tips slightly angled to the right. Above them are swirls of black and white showing the vortices of fluid they generate when exposed to ultrasound. Scientists suggest lining stents with cilia to make them easy to clean.

Health & Medicine

Lining medical stents with hairlike fuzz could fend off infections

By McKenzie Prillaman23 hours ago

A utensil called a girolle with a wheel of cheese, likely tête de moine, with the post of the girolle going through its center and a blade that rotates around the post, which has scraped off a frilly rosette

Physics

Physicists explain how cheese rosettes form

By Emily ConoverMay 6, 2025

A pink postage stamp with Russian letters, the date 1972, and a blue circular inset highlighting an illustration of a spacecraft.

Space

A Soviet spacecraft will crash to Earth this month

By Lisa GrossmanMay 5, 2025

A Yangtze finless porpoise looking towards the camera through the glass in a dolphinarium at the Chinese Academy of Sciences.

Animals

Ancient poems document the decline of the Yangtze finless porpoise

By McKenzie PrillamanMay 5, 2025

A picture of a male Indian bullfrog with vocal sacs puffed out

Animals

Frog ribbits erupt via an extravagant variety of vocal sacs

By Susan MiliusMay 5, 2025

We summarize the week's scientific breakthroughs every Thursday.

Spotlight on Health

A child in sunglasses has dental tools inserted in mouth by practitioner wearing blue gloves.

Two cities stopped adding fluoride to water. Science reveals what happened

As calls to end fluoride in water get louder, changes to the dental health of children in Calgary, Canada, and Juneau, Alaska, may provide a cautionary tale.

By Alex ViverosApril 28, 2025
A man let snakes bite him 202 times. His blood helped create a new antivenom
Ozempic and Wegovy ingredient may reverse signs of liver disease

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Science News Magazine

Cover of Science News' May 2025 issue featuring a Spinosaurus on the cover

May 1, 2025 Vol. 207 No. 5

Featured Media

A Yangtze finless porpoise looking towards the camera through the glass in a dolphinarium at the Chinese Academy of Sciences.

Ancient poems document the decline of the Yangtze finless porpoise

The porpoise is critically endangered. Ancient Chinese poems reveal the animal’s range has dropped about 65 percent over the past 1,400 years.

A black and white photograph from a low angle of a chess board with pieces set up for play. White chess pieces are on the left side of the board, while black pieces are on the right. In the center, a white pawn faces a black pawn.

Chess players rely on familiar moves even when the game changes

a hand reaches down into an illuminated screen displaying a 3-D graphic of a car

A new 3-D display lets you reach in and touch virtual objects

Six caterpillar cases covered in spikey body parts of insects and spiders.

This caterpillar wears the body parts of insect prey

An artistic rendering of communal hunting, showing people with spears and horses.

Ancient horse hunts challenge ideas of ‘modern’ human behavior

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More Stories

Life

Gila monsters may struggle to survive climate change

By Jake BuehlerApril 4, 2025
Dark coats may have helped the earliest mammals hide from hungry dinosaurs

By Jake BuehlerMarch 13, 2025
A new book chronicles the science of life in the air

By Andrea TamayoFebruary 25, 2025

Humans

Biological sex is not as simple as male or female

By Tina Hesman SaeyFebruary 20, 2025
How child soldiers heal after the trauma of war

By Elizabeth QuillJanuary 10, 2025
Dietary evidence bolsters Clovis hunters’ reputation as mammoth killers

By Anna GibbsDecember 4, 2024

Climate

Losing a key U.S. climate report would hurt future disaster prep

By Carolyn GramlingMay 2, 2025
Wetland bacteria could make more methane in a warming world

By Carolyn GramlingApril 23, 2025
Earth’s landmasses lost trillions of tons of water this century

By Carolyn GramlingApril 21, 2025

Astronomy

A gas cloud 5,500 times as massive as the sun lurks nearby

By Mara Johnson-GrohMay 2, 2025
A gas clump in the Milky Way’s neighborhood might be a ‘dark galaxy’

By Mara Johnson-GrohApril 18, 2025
A claimed hint of alien life whips up spirited debate

By Lisa GrossmanApril 17, 2025

Physics

Here’s how we might generate electricity from rain

By Jude ColemanApril 29, 2025
Imitation dark matter axions have arrived. They could reveal the real thing

By Emily ConoverApril 16, 2025
Calls to restart nuclear weapons tests stir dismay and debate among scientists

By Emily ConoverMarch 27, 2025

Health & Medicine

Bird flu in cows shows no signs of adapting to humans — yet

By Tina Hesman SaeyApril 28, 2025
Autism rates rose again. Experts explain why

By Tina Hesman Saey and Laura SandersApril 21, 2025
Clinical trials face uncertain futures amid Trump cuts

By McKenzie PrillamanApril 17, 2025

Earth

The United States’ oldest known rock has existed for at least 3.6 billion years

By Evan HowellApril 25, 2025
The ozone layer shields life on Earth. We’ll soon lose a key way to monitor its health

By Nikk OgasaApril 4, 2025
More details about the Myanmar earthquake are emerging

By Carolyn GramlingApril 1, 2025

Science & Society

Federal cuts put help for mental health and drug addiction in peril

By Laura SandersApril 14, 2025
‘Pseudoscience’ digs into the allure and dangers of believing fake science

By Sibani RamApril 14, 2025
5 years after COVID-19 became a pandemic, are we ready for what’s next?

By McKenzie PrillamanMarch 10, 2025