Many of the health benefits of exercise are thought to be due to the synthesis of damage-controlling molecules called heat-shock proteins, and Dr Rattan's group has been experimenting with other ways of triggering these proteins.

ECONOMIST: How to live longer��maybe

Three years later during STS-27, Atlantis' heat shield sustained severe damage from a piece of insulation that broke off of the right solid rocket booster during launch.

ENGADGET: Space Shuttle Atlantis ends its run of predicting disaster for other NASA shuttles

Such a change in temperature -- which many scientists believe is being caused by pollution trapping heat in the atmosphere -- would mean widespread droughts and floods and massive economic and natural damage, experts say.

CNN: Climate talks secure U.S. support

As many as 15 percent of the 5, 000 previously approved welds in the reactor's auxiliary plumbing, containment dome and spent-fuel cooling systems were X-rayed and found to be defective due to air pockets, poor soldiering and heat damage.

CENTERFORSECURITYPOLICY: A Chernobyl reminder just off our shores

Hundreds of thousands of people in Indiana through Maryland are still dealing with this heat without the benefits of electricity, due to a derecho -- or massive storm usually with straight-line wind damage -- that barreled eastward late Friday and into Saturday and was fueled, in part, by the extreme heat.

CNN: SHARE THIS