Orca whales were discovered with a toilet paper chemical in their livers and skeletal muscles. It's just the 'tip of the iceberg' for one of the most contaminated marine mammals in the world.

Tech Insider
The head of an orca is shown protruding from the center of a toilet paper roll, where it appears stuck.

Robyn Phelps/Insider

6 western states agreed on a plan to make major cuts to water usage from the shrinking Colorado River, but California — the largest user of them all — wouldn't get on board

Tech Insider
Colorado River. Low water level strip on cliff at lake Mead, taken from the Hoover Dam at Nevada and Arizona border.
Colorado River. Low water level strip on cliff at lake Mead, taken from the Hoover Dam at Nevada and Arizona border.

Getty Images

A 300 million-year-old fossilized fish has the world's 'oldest preserved vertebrate brain.' It offers new clues about evolutionary history, say scientists.

Tech Insider
The fossilized skull of Coccocephalus wildi, an early ray-finned fish that swam in an estuary 319 million years ago.
The fossilized skull of Coccocephalus wildi, an early ray-finned fish that swam in an estuary 319 million years ago.

Jeremy Marble/University of Michigan News

NASA satellite will use radar to map Earth's crust in extreme detail

Engadget

Scientists will soon have a spaceborne tool to study environmental changes at a very high resolution, and you won't have long to wait to learn more about it.

Some Neanderthals couldn't smell their own stink, suggests a new study recreating early humans' noses

Tech Insider
A blond child grimaces nose-to-nose with a wax sculpture of a Neanderthal leaning on a stick.
New research suggests Neanderthals couldn't smell some things quite as well as humans.

©Neanderthal Museum

6 science-backed ways to stave off dementia and preserve your memory as you age

Tech Insider
Dementia

AimPix/Shutterstock

Bill Gates said he'd rather fund vaccines to 'save lives' than go to Mars, but he thinks someday Elon Musk will be a 'great philanthropist'

Tech Insider
Elon Musk Bill Gates

Susan Walsh/AP; Mike Cohen/Getty Images for The New York Times

Video: Watch 2 astronauts spacewalk today to prep solar arrays that will boost the space station's power supply

Tech Insider
Expedition 68 Flight Engineer Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) is pictured in his Extravehicular Mobility Unit (EMU), or spacesuit, during a seven-hour and 21-minute spacewalk to install a modification kit on the International Space Station's starboard truss structure preparing the orbital lab for its next roll-out solar array.
Expedition 68 Flight Engineer Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) i

A 45-year-old biotech CEO may have reduced his biological age by at least 5 years through a rigorous medical program that can cost up to $2 million a year, Bloomberg reported

Tech Insider
Bryan Johnson
Bryan Johnson, a 45-year-old biotech founder, hopes to rewind the clock of his body a few decades through a program he started, called Project Blueprint.

Courtesy Dustin Giallanza

See the rare green comet in pictures so you know what to look for in the sky

Tech Insider
green comet streaking across starry night sky with long white tail
Comet ZTF, as photographed on January 18, 2023.

Dan Bartlett

Subscribe to Science