Though computers have gotten faster, smaller and more versatile, it's still a big challenge to get them to demonstrate intelligent behaviours. Will machines like robots ever match -- or perhaps even exceed -- the capabilities of the human brain?

A leading US scientist has predicted that computers will be as intelligent as humans by 2029. Futurologist Dr Ray Kurzweil told the American Association for the Advancement of Science that in the near future, machine intelligence will overtake the power of the human brain. He said that within two decades computers will be able to think quicker than humans.

Dr Kurzwell painted the picture of us having tiny robots called nanobots implanted into out brains to boost our intelligence and health. He told reporters that these microscopic nanobots would work with our brains to make us think faster and give us more powerful memories.