A look at how military robots could change the nature of warfare. One expert argues that the introduction of fighting robots would be "on the short list" of seminal events in all of military history right alongside the development of iron weapons, gunpowder, and the atomic bomb.
What used to be confined to speculative fiction is fast becoming scientific fact. Brain boosting, or "neural enhancement," is already being done - and much more powerful techniques are on the way. Some observers say we're rushing into this brain-gain revolution without sufficient thought or preparation.
Does the world need therapeutic cloning research? UN members are preparing to vote on a resolution to ban human cloning.