Was the sea always blue?

Although it’s by no means certain, scientists are slowly accumulating evidence that life once existed on the Red Planet

Amy McPherson explores the importance of the lost kelp forests and how they are making a return

As an astronomer, I collect stars. There are several hundred billion of them in our Galaxy, the Milky Way, so it’s important to find a way to categorise them. While others might rank their stars by co

Amazing answers to your curious questions

We humans are always wondering whether we’re alone in the Universe. But what if we are one of a long line of species that were around long before our planet even existed? This intriguing idea, that li

Learn to capture the beauty of marine life in watercolours with artist Julie Collins