Structures that may have been created by ancient tribes could only be studied using Google Earth. Saudi officials finally invited an archaeologist to observe them via helicopter.
Bleach may be common, but the molecular dance that makes it work is an intricate wonder.
Biologists studied cormorants and penguins that hunt fish in frigid seas and found that cormorants save energy by only moving their necks when seizing prey.
Negotiators from nearly 200 countries are meeting in Bonn, Germany, in the biggest climate change talks of the year. Here’s all of our coverage.
Island states that are least responsible for global emissions but most vulnerable to storms and rising seas are looking outside the United Nations process for aid.
It’s Black Friday, space fans, so here’s a roundup of the best online deals for out-of-this-world “Star Wars” merchandise on Amazon.
Subspecies of the flowers share most of their genes, but differ in a handful that lead to some being yellow on magenta and others being magenta on yellow.
The Laser Interferometer Gravitational-Wave Observatory (LIGO) has detected yet another black hole merger — their fifth since 2015, and involving some of the lightest black holes the instrument has ever detected.
The first cat to fly in space and live to meow about it is getting her own statue, thanks to the crowdfunded support of more than 1,100 of her fans.
Here’s a guide to the major astronomical events of the next year, as well as space launches and milestones for spacecrafts already in travel.