Stephen Sackur speaks to billionaire investor David Friedberg. He is convinced science and technology can fix the world's biggest challenges. But will we use our knowledge wisely? Show more
Discover 11,128,835 listings and 279,406 playable programmes from the BBC
Stephen Sackur speaks to billionaire investor David Friedberg. He is convinced science and technology can fix the world's biggest challenges. But will we use our knowledge wisely? Show more