This solar water heater is easy to build and operate.

VOA: special.2011.04.25

During this mock exercise, water is used instead of chemicals to decontaminate people who play the role of survivors.

VOA: standard.2010.07.21

"At some level,debates like this never really end. Like,there are still people who believe that fluoride in water is a government plot."

VOA: standard.2010.03.23

This is one of the few days of the week that water flows from the taps.

VOA: standard.2009.08.01

"You see the river is a tree line, and all this is basically fresh-water marsh."

VOA: standard.2010.05.09

This water pump -- called the Super Money Maker -- is designed to make a big difference in the lives of rural Africans.

VOA: standard.2010.08.09

It says in some places, a majority of displaced people get their water from rivers, lakes or streams and this is posing a major health risk.

VOA: standard.2009.09.20

"Basically,it's an underwater balloon. You've got two parts to it: You've got the balloon here - which is this long cylindrical object - and that's filled with a lighter-than-water substance, which is aviation gasoline."

VOA: standard.2010.06.21