Dee Dee Myers talks to Condoleezza Rice, among others about how the world will change if more women follow in their footsteps of power. Show more

Peter Bowes is in Los Angeles to look at how people are starving, dieting, injecting, and exercising more and more to stave off the aging process. Show more

Alastair Leithead enters Silicon Valley where the smart money is in the start-ups that could shape lives for decades to come.

Theo Leggett looks at how original design and cutting-edge technology could help to combat urban gridlock - from folding cars to gyroscopic motorcycle.