As the rapid processing power of computers develops it looks likely that artificial intelligence will soon exceed our own. What will this mean for humanity's survival?

Dr Michio Kaku believes we can actually build `Star Trek's' fictional holodeck. Join him on his mission to create an imaginary world indistinguishable from the real thing.

Dr Kaku wants to create a transformer that can turn into any shape, moving with strength and stealth. What technologies can help him realise his vision?