In Nairobi, recycling poo is cleaning up the slums

"When I started, there was poop in bags everywhere," said Ricky Ojwang, skillfully navigating a rubbish-strewn canal in Mukuru, a Nairobi slum where he's worked to improve sanitation since 2012.

EPA issues violation notice to San Francisco

The Trump administration ratcheted up its feud with California on Wednesday as the Environmental Protection Agency issued a notice accusing San Francisco of violating the federal Clean Water Act.

EPA moves from air to water in its criticism of California

The Trump administration warned California officials Thursday that the state is "failing" to meet federal water quality standards, the latest move in the president's escalating political feud with the state's liberal leaders.

Human waste an asset to economy, environment, study finds

Human waste might be an unpleasant public health burden, but scientists at the University of Illinois see sanitation as a valuable facet of global ecosystems and an overlooked source of nutrients, organic material and water.

US waste driving global garbage glut: study

The United States is driving a worldwide waste boom that poses a severe risk to human health, the environment and the economy, according to anew study of global garbage trends published Wednesday.

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