Science

NASA did not specify what caused the debris field. The State Department confirmed that a Russian weapons test created more than 1,500 fragments of space junk in orbit.

Researchers spent more than four decades studying birds in the rainforest, observing statistically significant changes in size.

KoBold, which hunts for minerals for batteries, is one of many companies founded in recent years to address the various bottlenecks in the broader push toward renewable energy.

The question of how to address the continued use of fossil fuels responsible for much of global warming has been one of the key sticking points at the two-week talks.

A new study indicates the star Algol, long considered unlucky, may have hidden companions.

“We cannot settle for the lowest common denominator. We know what must be done," U.N. Secretary-General António Guterres said Thursday.

As the global average temperature rises, so do the hottest daily temperatures. And, in some places, the hottest days can be dangerous to human health, causing heat stress.

A new study found that Tangier Island is losing ground faster than previously thought, highlighting how climate change threatens U.S. coastal communities.

"It was something like a wish that was never fulfilled, that always stuck in the back of my head," Manfred Steiner said after he recently defended his dissertation successfully at Brown University.

“I don’t think the spike will be as bad as last winter because we have vaccines available and the approval for younger age groups is a big game changer,” one public health expert said.

The shifting attitudes around a concept once dismissively dubbed “toilet to tap” come as dry regions scramble for ways to increase water supplies.