In one of the first films ever to come out of modern China, NOVA sifts through clues that Chinese scientists have uncovered in their pursuit of particularly virulent and elusive forms of cancer from which one out of every four people die.

Locked in the shale of the Western Rocky Mountains is more oil than in the Middle East—more than enough to solve our dependence on foreign crude oil. But will shale oil solve our gasoline shortage, or will it simply turn the Rockies into a gigantic industrial zone? NOVA explores the promise and the problems of shale oil.