US Futurologist Michio Kaku 'Eternal Life Does Not Violate the Laws of Physics'

In his best-selling book "Physics of the Future," American professor Michio Kaku lays out his vision for the world in 2100. Kaku, the son of Japanese immigrants, spoke to SPIEGEL about a future in which toilets will have health monitoring sensors and contact lenses will be connected to the Internet.