Researchers had only hypothesized the existence of underground lava tubes on Venus —until now.

Setting a limit for global warming didn't succeed in galvanising climate action quickly enough – now we should focus on ...

Relatedly, astronomers may have just pushed the upper size limit of what counts as a planet.

The planet experienced its fifth-hottest January on record despite a cold snap that swept across the United States and Europe, the EU's climate monitor said Tuesday.