How much sunscreen should you be using, when should you apply it, and are there any downsides to doing so? Skin cancer expert Rachel Neale is here to answer all of these questions and more

The fate of the Atlantic Ocean current that keeps Europe’s climate warm depends on our carbon emissions and the rate of ice melt from Greenland, but there is a chance that a shutdown is already inevitable

Our brains are large compared with other animals, so it is tempting to assume there was an evolutionary advantage to them – but that may not be true at all

AI companies are hiring philosophy graduates to help them understand the nature of consciousness, whether it can be replicated and how their systems can be made better and more reliable

An experiment that involved feeding a dead goat to a Komodo dragon as well as an analysis of thousands of ancient bones suggests that Homo floresiensis was neither a skilled hunter of big game nor a master of fire

Earth was once covered by a global magma ocean, which later cooled and crystallised – now traces of this primordial event have been found in magma from a young volcano in the Indian Ocean