麻豆约拍

Back up to: Horizon

1. Revisited: Dawn of the Dinosaurs

   Looking at the theory that a comet impact was responsible for the extinction of dinosaurs.
2. The Day We Learned to Think

   A small piece of stone found in an African cave is threatening to re-write human history.
3. The Day the Earth Nearly Died

   Palaeontologists ask what wiped out all but five per cent of life on Earth 250m years ago.