Earth

Understanding an ecosystem means following changes in the abundances and identities of the species present as the clock ticks. The BioTIME database should help.

David Lindenmayer of the Australian National University College of Science in Canberra says that older trees play outsize roles in maintaining landscapes and ecosystems.

The lower stratosphere’s ozone continues to decrease, despite the world’s success in phasing out ozone-depleting chemicals

We can talk a lot of geology in five minutes!

Geologists are cool! Here's how you can play one on the internet.

General Jay Raymond, Commander of Air Force Space Command, talks about keeping watch over space and cyber.

Getting around the sun in 2017 was a memorable trip.

Scientists are exploring the use of fiber-optic cables—like the ones that form the backbone of the internet—to monitor earthquakes. Julia Rosen reports.

New beaver ponds in the Arctic may contribute to the destruction of the permafrost that holds that landscape together.

When sharks prowl shallow waters, fish quit foraging and hide—sparing seaweed from being grazed in those areas. Jason G. Goldman reports.

To forecast sea level rise, a flotilla of robot subs must map the unseen bottom of a melting ice shelf—if they are not sunk by it

You may or may not believe what happens when a GoPro camera is pitted against pahoehoe