Tom Metcalfe

Tom Metcalfe is a freelance journalist based in London who writes mainly about science, archaeology, history, the earth, the oceans and space.

Latest from this author

Did human ancestors use fire to cook their meat? Some argue it served another, more valuable purpose.

The dramatic interlocking stone walls at Machu Picchu have proven to be highly earthquake-resistant.

Knowledge of how to make the bright purple dye was a valuable trade secret to the Phoenicians.