Christopher Joyce

Researchers say 30 percent to 50 percent of the ice loss is due to natural variation in temperature and humidity, while human-caused warming is responsible for the rest.

More than 8 in 10 fires are started by people. Researchers say humans are not only causing the vast majority of wildfires, they're extending the normal fire season around the U.S. by three months.

The idea of plumes of moisture curling above our heads might seem beautiful, but new research shows atmospheric rivers to be among the most damaging of weather systems.

Tiny creatures in the Mariana Trench have high levels of industrial contamination. The new findings suggest that even Earth's most remote locales feel the effects of human beings.

The country's single biggest source of climate information is the federal government. What happens if a Trump administration tries to censor it?

Fewer hurricanes have made landfall on the coast in the past decade. Research suggests a bipolar relationship between conditions in the Atlantic and along the coastline may have a protective effect.

Scientists concede that oil and gas production is only partly to blame for the 3 percent surge in the greenhouse gas in the last decade. Obama tightened rules on the industry. Will Trump repeal them?

After years of negotiation with wildlife conservation groups, China's government has now set a timetable to end its legal ivory trade--March 2017.

Scientists meeting in San Francisco issue their 2016 report card. "The Arctic as a whole is warming at least twice as fast as the rest of the planet," one says, and it is getting progressively worse.

At a meeting in San Francisco, thousands of researchers are pondering how they can influence President-elect Donald Trump's thinking on climate change.

A new study looks at clusters of tornadoes, like those that hit the Southeast this week. They are costly in lives and insurance payouts.

Climate scientists say the conditions that might produce more or stronger tornadoes are spreading along with a warmer atmosphere. But there's no sign so far that this is happening. New research finds that when tornadoes occur in clusters, as they often do, those clusters contain more tornadoes than ever. And we're also seeing more clusters with especially powerful tornadoes.

President-elect Donald Trump has vowed to rescind some environmental regulations. Environmentalists are planning ways to keep a new administration from rolling back eco-rules.

President-elect Donald Trump's energy plan includes a promise to develop clean coal. Clean coal is a technology that has struggled for years and is unlikely to be competitive with cheap natural gas.

New evidence suggests that for a lot of birds, plastic actually smells like food. The reason for that involves a common kind of algae floating in the ocean and a "chemical scream."

During the campaign, the president-elect said climate change is not real, and he rejected last year's international agreement to cut greenhouse gases.

Four years of too little water is killing millions of trees in the Sierra, yet some giant sequoias still thrive. Tree-climbing scientists are exploring sequoias branch by branch to find their secret.

Researchers say the ice is melting more quickly than they've ever seen. They think it's because warm water is circulating under the ice shelf, and that the melting process appears to be irreversible.

Capuchin monkeys in Brazil have been seen making sharp stone flakes. It was previously thought that only humans and their ancestors had flaking skills.

Presidential contenders Hillary Clinton and Donald Trump have very different views on energy and climate change. In our series, What's The Issue, we find out just how much they differ.