President Trump has already begun to introduce changes that weaken the Endangered Species Act, a cornerstone of U.S. conservation law.

Defining AI chatbot personality could be based on how a bot “feels” about itself or on how a person feels about the bot they’re interacting with.

A few fossilized body parts hinted at an enigmatic bird's close ties to waterfowl like ducks and geese. A newfound skull may bolster that idea.

Urban wildfires like LA’s make harmful chemicals from burning plastics and electronics that can make indoor air dangerous for months.

Two gargantuan canyons on the moon were carved by a hailstorm of rocks — and that’s good news for future lunar astronauts.

Riley Black’s new book, When the Earth was Green, uses the latest research to envision the ancient worlds of our favorite prehistoric animals.

Our brains are increasingly plastic. Minuscule shards and flakes of polymers are surprisingly abundant in brain tissue, a study of postmortem brains shows.

Quantum physics underlies technologies from the laser to the smartphone. The International Year of Quantum marks a century of scientific developments.

While genetic tests can reveal the ancestry of enslaved individuals, strontium analysis can now home in on where they actually grew up.

Science dioramas of yesteryear can highlight the biases of the time. Exhibit experts are reimagining, annotating — and sometimes mothballing — the scenes.

Rivers began pumping weathered material into the sea about a billion years after Earth formed, suggesting continents may have gotten an early start.

This new six-part podcast follows the lives of people with severe depression who volunteered for deep brain stimulation.