Gates Foundation

And he drinks it. It's all thanks to the Janicki Omniprocessor, a new machine that can turn human waste into clean water.

Philanthropist Paul Allen is giving at least $100 million to support health care workers battling Ebola. Here's a look at his goals — and at contributions from other charitable groups.

Apeel Sciences hopes its products, which use natural methods to fend off pests and oxidization, can markedly reduce the amount of produce wasted because of spoilage.

The Grand Challenge is a new tradition in the world of public health: asking anyone (and everyone) to come up with innovations. The latest assignment: design cooler protective gear for Ebola teams.

More than 500 girls living in poverty have lent their voices to Girl Declaration, a campaign urging world leaders to include the needs of girls in the next set of global development goals.