They call it Australopithecus deyiremeda. The name comes from a language spoken in the Afar region of Ethiopia and means “close relative”. This is a brand new and previously unsuspected species – discovered in Ethiopia – that lived at the same time...

For most British people the Dunkirk evacuation between May 26 and June 4 1940 was the most significant early event of World War II. And in the 75 years since those momentous events it has come to occupy, in Penny Summerfield’s words, “an iconic place in British...

Wound infections can occur when bacteria from the skin or from the environment are introduced into damaged tissues. Crucially, all wounds are colonised by bacteria but under certain conditions these bacteria can multiply unchecked, growing to reach numbers...