Science Panorama

The Most Terrible Bomb in History

76 years after the first use of a nuclear bomb by mankind, the knowledge required to manufacture such a weapon is freely available to all, but it is still an expensive and complex enterprise.

Science Panorama

The Animal’s Tool Box

From chimpanzees to crows, from dolphins to octopi: Why did this ability develop in only a few species, and why them?

Science Panorama

The Time-Travel Paradoxes

What happens if a time traveler kills his or her grandfather? How do you stop a time machine from just appearing somewhere in space, millions of kilometers from home?