Stories by Mary Randolph

The cat is smaller than a house cat but has the spots of a leopard

Science is helping to peel back the layers of how dogs process the world around them

More than 100,000 people in the country are over 100 years old

The dinosaurs were once considered reptilian, but the new results suggest we may need to rethink their evolution

A high-ranking official announced yesterday that the U.S. military has deployed weapons into orbit to counter threats from Russia and China

Two studies find signs of strange black hole binary systems

NASA’s satellites captured the aftermath of the eruption, which lasted for more than a day

The planet’s “wrinkles” give scientists a clue into how the world is contracting in size

The looming El Niño conditions, combined with the warming effects of climate change, contributed to the historic temperatures

Gondwana was much bigger than we thought, according to the new analysis

AlphaGenome Atlas predicts the effect of any single change in the fundamental structure of DNA

A floating island in a Canadian reservoir moved more than 30 kilometers across the water—here’s why

The Nancy Grace Roman Telescope is headed toward a Lagrange point, a critical position in outer space where gravitational forces behave in specific ways

The fast-growing private-school network is handing much of instruction over to artificial intelligence. Researchers say the science is far from settled

Spirals, ellipticals, irregulars, oh my!

Two robots beat Usain Bolt’s 100-meter-dash record—but likely couldn’t survive in the real world

The mosquito-borne illness has sickened hundreds of people this year

A new study finds that China’s solar energy boom is hurting bird diversity

Could this secret cellular weapon be the key to longevity?

This state, which has seen more than 200 twisters this year, could beat Texas’s all-time record of 244 tornadoes in 12 months

A new study of the Helix Nebula shows a never-before-seen detail of how dying stars recycle elements. Researchers found it by accident

This dying star appears to have a face of gas and a mane of space dust

The vagus nerve is the autonomic nervous system’s highway, connecting every major organ

Doctors used to warn coffee drinkers. Now research reassures them