By Adrian Dingle
Drinking water with unsafe amounts of lead can cause serious health
problems. But how do we know which amounts of lead in drinking
water are unsafe?
The Chemistry of Candy
By David Warmflash
Donated organs need to be preserved in cold solutions before they are transplanted to people who need them. But the preservation time is relatively short. A recent cooling technique promises to preserve organs for days (instead of hours), increasing the chances that the lives of more people could be saved.
By Gail Kay Haines
You may not see them, but they are all around you. Called rare-earth elements, 17 silvery metals are in nearly every high-tech product that is a part of our modern lives.