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Many things raise the risk for cancer, including exposure to various toxins and radiation. But our knowledge about the range of chemicals and compounds that can trigger cancer is limited.

A prominent journalist with a sick child quit her job and produced an eye-opening look at the consequences of China's air pollution problem. Some 200 million have watched it since the weekend.

The U.S. military manages about 30 million acres of land that is home to some 400 threatened and endangered species. This raises a host of issues, but some environmentalists see it as an opportunity.

A government-appointed panel wanted the federal government's 2015 nutrition advice to consider a food's environmental impact. But the Cabinet secretaries with final authority say it won't happen.

Tompkins created The North Face and co-founded Esprit, but abandoned the business world to devote himself to environmental causes. He was 72.

NPR's Scott Simon asks EPA administrator Gina McCarthy about the toxins released into a Colorado river this week by an EPA contractor working on a shuttered gold mine.

Earth is home to more than 3 trillion trees, a new map of forest density shows. That's more than anyone realized. But the total is also down about 46 percent since the first humans arrived.

In theory we do not want to buy products made by child labor or polluting factories. But in practice, we don't want to know about a company's practices.

Lumpy, bumpy produce that fails to meet supermarkets' high bar for beauty usually ends up as waste. But increasingly, European supermarkets are finding that ugly sells, if you tell the right story.

Many crops we eat today are the product of genetic modifications that happen in a lab, not in nature. Scientists and consumers are divided how cautious we need to be about these foods.