https://www.bbc.co.uk/iplayer/episode/b0bb33ht/horizon-2018-3-how-to-build-a-time-machine
Time travel is not forbidden by the laws of nature, but to build a time machine, we would need to understand more about those laws and how to subvert them than we do now. And every day, science does learn more. In this film Horizon meets the scientists working on the cutting edge of discov...
These child prodigies of the animal kingdom have feathers and beaks – and very special skills!
The Keas of New Zealand are the only parrots that live in snowy mountain areas. They like testing their brains, solving puzzles and challenging tourists: they unscrew bottle-tops, dismantle windscreen wiper blades and tear open rucksacks. They seem so determined you’d think they have ...
‘This is not science fiction’, says a commercial inviting young people to join the US Air Force. Indeed it is anything but a utopian vision when drones targeting humans in Afghanistan and other countries are operated from a safe distance. National Bird describes the dramatic experiences of three former Air Force analysts who have decided to break their silence about the secret ...
New planets are now being discovered outside our solar system on a regular basis, and these strange new worlds are forcing scientists to rewrite the history of our own solar system. Far from a simple story of stable orbits, the creation of our solar system is a tale of hellfire, chaos and planetary pinball.
It's a miracle our Earth is here at all.
Dr Michael Mosley seeks to establish the truth about meat. Every year, humans raise and eat 65 billion animals - nine animals for every person on the globe. In this eye-opening documentary, Michael examines the impact that this is having on the planet and finds out what meat eco-friendly carnivores should be buying. Is it better to buy free-range organic or factory-farmed meat?...
