The last male northern white rhino died in 2018. Now only Najin and Fatu remain, two females living under 24-hour armed guard ...

The millions of species humans share the world with are valuable in their own right. When one species is lost, it has a ripple effect throughout the ecosystems it existed within. But there’s a hidden ...

Human beings are steadily heading towards extinction and may “already be a dead species walking”, according to a scientist. Writing an opinion piece in Scientific American, palaeontologist and editor ...