Astronomers have a lot of thoughts about the latest paper claiming we’ve found the strongest hints of alien life yet on the distant planet K2 18b.

The Curiosity rover identified hidden caches of the mineral siderite, which could help explain why Mars lost its habitable climate.

The Trump administration has reportedly disrupted over 100 clinical trials. Science News spoke to researchers about the impacts on four of them.

While solitary black holes should be common, they are hard to find. The one in Sagittarius revealed itself when it passed in front of a dim background star, magnifying the star’s light and slowly ...

A long-elusive, hypothetical subatomic particle called the axion can be simulated and potentially detected in a type of thin material.

The phase I clinical trials showed stem cell transplants for Parkinson’s disease appear to be safe and might restore dopamine-producing brain cells.

For a good night of sleep, consider getting your circadian rhythm back in sync with the sun. Here’s how to do it.

Two cases of alpha-gal syndrome suggest that the lone star tick isn’t the only species in the United States capable of triggering an allergy to red meat.

Adam Becker’s new book, More Everything Forever, investigates the dangers of a billionaire-driven tomorrow, in which trillions of humans live in space, served by AI.

An initial clinical trial in Kenya found no safety concerns, a first step toward testing unithiol as a treatment for venomous snakebites in people.

Imminent loss of NASA's Aura and Canada's SCISAT will severely diminish scientists’ ability to monitor ozone-depleting substances in the stratosphere.

As global temperatures rise, scientists debate the pros and cons of solar geoengineering, a strategy to cool Earth by reflecting sunlight into space.