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Treated human waste has been used on farmland for decades, but the ick factor has not entirely faded. Some environmentalists think the treatment process may not get rid of all the harmful contaminants that could be in the waste.

The parasite carries potentially lethal pathogens in Asia as well as Australia and New Zealand. Now it's in North America. We ask tick specialists to weigh in.

The interior secretary is stepping down after a tumultuous two years, marked by mounting allegations of misconduct in office.

Vicki Heyman and Bruce Heyman, former U.S. ambassador to Canada, speak with NPR's Scott Simon about their new book, The Art of Diplomacy.

Anthropologist Barbara J. King says Hurricane Florence should lead us to look beyond the agriculture industry's loss of "inventory" and view animals as thinking, feeling — and suffering — beings.

Appliance makers and home builders are in Washington, D.C., to celebrate the energy efficiency program. Energy Star is among 50 EPA programs that would be eliminated under the president's budget plan.

The Sea Grant program, which funds research on coastal environments, is slated by White House for elimination in 2018. If it goes, a project that finds leaking septic tanks goes down the drain, too.

Germany's top court rejected some of the activists' arguments but agreed that the country's climate act violates their fundamental rights by not specifying emissions reduction targets after 2030.

A calamitous invention that poisoned air, water and soil for generations is no more, according to a report from the United Nations.

President Bush vows in his State of the Union speech to increase funding to develop coal-fired power plants that produce no polluting emissions. But the federal government is currently undermining efforts by states to require power companies to use an existing "green" technology that's already available.