The Mars Express orbiter has kept an eye on an elongated cloud above Arsia Mons volcano for the last few years. The cloud is reoccurring, grows incredibly fast and is "made up of water ice," according ...

Madhavan Nair Rajeevan’s new book tracks shifts over 50 years, explores models we need to build. ‘We must find ways to track it; there’s simply too much at stake,’ he says.

Beryllium-10 is a radioactive isotope that is continuously produced by cosmic rays interacting with Earth's atmosphere. When ...