Coolhunt: The clean water filtration system

What is it? A plant wich provide safe drinking water in the developing world.

Why is it cool? The herbage from the specially chosen plants at absorbing the toxic arsenic soaks up the metalloid, producing safe potable water. Now there is filtered safe water. It can reduce deaths from many people.

http://www.trendhunter.com/trends/clean-water-filtration-system