We generally don't get into the actual medical side of healthcare and don't pay much attention to clinical trials, but this one merits mentioning. After all the recent speculation about whether exposure to radiation from mobile phones could cause brain tumors and other serious ailments comes a new study suggesting radiation could actually guard against or even reverse the progression of Alzheimer's disease. The research was done on mice, so it's hard to draw any conclusions related to humans, but it's at least a glimmer of hope in the battle against a degenerative disease. Video