Wednesday,  February 12 , 2025

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Science & Technology

Scientists develop concrete that can melt snow on its own

February 3, 2025, 5:55am Life

Dropping temperatures and the prospect of snow looming in the forecast have Philadelphians crunching through layers of road salt that keep ice and snow from settling on sidewalks and streets. Read story

A monarch butterfly at the Coastal Access Monarch Butterfly Preserve in Los Osos, Calif., on Jan. 20.

California’s monarch butterfly population plummets; fire wipes out Topanga habitat

A monarch butterfly at the Coastal Access Monarch Butterfly Preserve in Los Osos, Calif., on Jan. 20.

February 2, 2025, 1:22pm Life

The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in California this winter, a foreboding sign for the future of the beloved black-and-orange insect. Read story

A Lab technician works on seed viability Nov. 14 at the Genetic Resources Research Institute seed bank in Kiambu, Kenya.

Who’s allowed to share seeds? It’s a growing question

A Lab technician works on seed viability Nov. 14 at the Genetic Resources Research Institute seed bank in Kiambu, Kenya.

February 1, 2025, 5:49am Nation & World

Tucked away in a lush, forested area of central Kenya’s Kikuyu town, the National Seed Bank stands as a crucial safeguard for the future of the country’s agriculture. Inside two chilly rooms of a government building, more than 50,000 seed varieties are cataloged and stored. Read story

The oldest evidence for lead pollution comes from ancient Greece

January 30, 2025, 10:44am Nation & World

Ancient Greece produced the earliest records of democracy, western philosophy — and, it turns out, lead pollution. Read story

In this image, made from NASA TV, US astronaut Suni Williams works outside the International Space Station during a spacewalk, Thursday, Jan. 30, 2025.

NASA’s 2 stuck astronauts take their first spacewalk together

In this image, made from NASA TV, US astronaut Suni Williams works outside the International Space Station during a spacewalk, Thursday, Jan. 30, 2025.

January 30, 2025, 8:39am Life

NASA’s two stuck astronauts took their first spacewalk together Thursday, exiting the International Space Station almost eight months after moving in. Read story

The sample return capsule from NASA’s OSIRIS-REx mission is seen shortly after touching down in the desert, Sunday, Sept. 24, 2023, at the Department of Defense’s Utah Test and Training Range. The sample was collected from the asteroid Bennu in October 2020 by NASA’s OSIRIS-REx spacecraft.

Are we all aliens? NASA’s returned asteroid samples hold the ingredients of life from a watery world

The sample return capsule from NASA’s OSIRIS-REx mission is seen shortly after touching down in the desert, Sunday, Sept. 24, 2023, at the Department of Defense’s Utah Test and Training Range. The sample was collected from the asteroid Bennu in October 2020 by NASA’s OSIRIS-REx spacecraft.

January 29, 2025, 8:34am Latest News

Asteroid samples fetched by NASA hold not only the pristine building blocks for life but also the salty remains of an ancient water world, scientists reported Wednesday. Read story

‘Nearly perfect’ prehistoric shark tooth found in U.K.

January 28, 2025, 6:05am Life

A “serrated blade” found sticking from a rock in the United Kingdom has been identified as a “nearly perfect” prehistoric shark tooth, experts say. Read story

Researchers have discovered a new species of crayfish: Cherax pulverulentus, or the dusty crayfish.

Brightly colored crayfish identified as new species

Researchers have discovered a new species of crayfish: Cherax pulverulentus, or the dusty crayfish.

January 28, 2025, 6:04am Life

Far from its home in Indonesia, a brightly colored creature moved around in an aquarium. Scientists peered into the tank, studying their pet-turned-specimen — and discovered it was a new species. Read story

NASA files (NASA files)

Scientists detect cosmic waves chirping like birds

NASA files (NASA files)

January 28, 2025, 6:03am Life

Scientists have detected cosmic waves that sound like birds chirping in an unexpected place. Read story

A burrowing owl sits in a habitat at the San Diego Zoo Safari Park in 2014.

Tiny burrowing owls thriving after ‘eviction’ to make way for Pasco water facility

A burrowing owl sits in a habitat at the San Diego Zoo Safari Park in 2014.

January 28, 2025, 6:03am Life

In Washington, burrowing owls are rare. Their population has sharply declined as development takes over areas where they’ve lived for years. Read story