Until now, getting a picture of genetic change in a tumor over time has been next to impossible. A new study reveals that cancer’s genetic tangle gets more complicated with time.

Screening test for slow-growing cancer may itself be harmful.

All things considered, the war against cancer is going better than that other war in progress at the moment — even though cancer research gets a lot less money.

What are the health effects of low-level radiation? How much cancer results from a small dose increase? If the hazard is small, are we wasting money on radiation protection? Lessons from Hiroshima and Chernobyl.

The bad news: New science suggests nicotine, not just tar, is the smoking gun in cigarette-related disease. The good news: There are plenty of ways to quit.

Enzyme that helps cancer cells move to a new location is found.