Half a million Britons set for DNA disease quest

LONDON (Reuters) - A project to collect DNA samples from half a million Britons to unpick the genetic basis of killer diseases including cancer got the go-ahead on Tuesday, marking the start of the world's biggest medical experiment. BEIJING (Reuters) - Pollution and poor management have worsened the quality of China's increasingly scarce urban water supplies, but the government will spend $125 billion in the next five years on the problem, an official said on Tuesday. CAPE CANAVERAL, Florida (Reuters) - NASA is set to launch the shuttle Atlantis on Sunday to kick off a four-year building marathon aimed at completing construction of the International Space Station.