Charles Kibaki Muchiri traced the water trickling across the surface of the Lewis Glacier with his fingers, illustrating how quickly climate change is melting the huge ice blocks from Africa's ...

Plastic bottles, smartphones, chicken bones – and the wider debris of everyday life – are tipped to outlast human civilisation and become the defining fossils of our age.

Researchers in Tanzania have unveiled a previously unknown species of gigantic tree, Tessmannia princeps, towering over the ...