VIDEO: Sun Used to Purify Water
Friday, August 29, 2008 - 13:07
in Biology & Nature
Just 48 hours of sunlight can kill germs that cause cholera, typhoid, and other diseases—a discovery that's already helping Kenya's poor.
Just 48 hours of sunlight can kill germs that cause cholera, typhoid, and other diseases—a discovery that's already helping Kenya's poor.