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A report by the United Nations Environmental Programme offers recommendations to stop the failure of dams holding mine waste. Will governments and industry leaders sign on?

William Happer, a Princeton scientist who is doubtful of the dangers of climate change, appears to be leading a White House challenge to the government's conclusion that global warming is a threat.

Researchers say diseases that spread between humans and animals will become increasingly commonplace as human expansion into previously uninhabited areas intensifies.

Since the pandemic was declared in 2020, many perhaps unfamiliar terms have become part of daily conversation. Here's a glossary, from antibodies to zoonosis.

Hawaii lawmakers are considering legislation that would require tourists to pay for a yearlong license or pass to visit state parks and trails. They're still debating how much they would charge.

Climate scientists say Colombia's glaciers could disappear within 15 years. Wet highland areas that provide much of the country's fresh water are getting warmer and drier. And each year, flooding becomes more severe. The coastal area of Tumaco has become an example of how environmental and security pressures are undermining previously stable communities.

Tests in Key West show sediment stirred up by cruise ships, which can harm marine life, routinely exceed federal standards. Key West has responded by suspending the tests.

A new report offers insights for U.K. efforts to improve areas with polluted water supplies.

The Energy Star program has saved Americans more than a half-trillion dollars in energy costs and has reduced climate pollution. Now the Trump administration wants to eliminate or privatize it.

Two large companies plan to capture natural gas from manure-filled ponds, turning it into clean, climate-saving energy. But some neighbors just want the ponds gone.