Born to rewild

The permafrost is disappearing. As it thaws, billions of tonnes of long-buried carbon could escape into our atmosphere with cataclysmic consequences. But one man, his son and a bunch of bison have a plan to restore the ice age ecosystem.

BBC Focus Magazine Subscription

Inside the mind of a dinosaur

Rather than being slow, lumbering and a bit stupid, dinosaurs were smart and nimble-brained – just ask the palaeontologists who are peering deep inside the fossilised skulls of these prehistoric animals.