Erich von Däniken, who has died aged 90, was among the first writers to suggest that human civilisation, and even human ...

Exceptionally preserved fossils from the Ediacaran period challenge what scientists thought was possible in sandstone. In the fossil record, creatures without hard shells or skeletons, such as ...

Science Fiction often shows us aliens who look much like humans, and suggest this is a result of convergent evolution to useful traits. But is such convergence to the human form or mind likely with ...