This Dec. 1968 image taken during the Apollo VIII mission and released by NASA shows the planet Earth.(Photo: AP)

"Every hour the sun beams onto Earth more than enough energy to satisfy global energy needs for an entire year," said James Fenton, director of the Florida Solar Energy Center. That's the equivalent of more than 8 million Hiroshima atomic bombs...

French President Francois Hollande (right front), Executive Secretary of the U.N. Framework Convention on Climate Change Christiana Figueres (left), French Foreign Minister Laurent Fabius (center) and U.N. Secretary-General Ban Ki-moon celebrate after the adoption of an agreement at the U.N. Climate Change Conference in December 2015 . (Christophe Petit Tesson/ European PressPhoto Agency)

It was a unique and historic moment, one of forward-looking international collaboration and unity that now poses a stark contrast to the Brexit crisis wracking Europe...

Most fires in the Amazon are started by landowners trying to clear fields and forests for cultivation. Credit:  Mario Tama/Getty

Forecasters warn that high ocean temperatures presage intense blazes in rainforest...

Boyan Slat wants to start the largest ocean clean up ever with the help of nets and ocean currents. He began testing his prototype this month. CREDIT: The Ocean Cleanup

Boyan Slat was just 16 when he realized he wanted to rid the oceans of plastic. It all happened after he dove into the problem in the most literal way while snorkeling in Greece and finding more drifting plastic than fish swimming...

Amber Rudd, the energy secretary. Photograph: Dan Kitwood/Getty Images

Fears had been raised that EU referendum would result in deadline being missed but sources say carbon budget will be agreed...

Rep. Lamar Smith, left, who has led many of Congress' efforts to question climate science, speaks with John Holdren, director of the White House Office of Science and Technology Policy. Credit: Getty Images

The letter, signed by many major American groups, pushes back against climate denial and calls for policy solutions to cut greenhouse gas emissions...

Water is pumped from a well into an irrigation ditch near Fresno, Calif. CREDIT: AP Photo/John Locher

California has a lot more usable groundwater than previously thought — but that water might already be in danger from oil and gas extraction in the state...

Using 29 years of data from Landsat satellites, researchers at NASA have found extensive greening in the vegetation across Alaska and Canada. Rapidly increasing temperatures in the Arctic have led to longer growing seasons and changing soil for plants. (Cindy Starr/NASA’s Goddard Space Flight Center)

Earlier this month, NASA scientists provided a visualization of a startling climate change trend — the Earth is getting greener, as viewed from space, especially in its rapidly warming northern regions. And this is presumably occurring as more carbon dioxide in the air, along with warmer temperatures and longer growing seasons, makes plants very, very happy...

The theoretical basis of anthropogenic climate change has been understood for decades.  The sun radiates energy to the earth, and it is emitted back from the earth’s surface as infrared radiation, which we feel as heat...

What impact will a steadily rising carbon fee with all proceeds returned to households have on the American emissions and health? REMI economist Scott Nystrom discusses the results of this ground breaking study. In summary, pricing carbon and returning the proceeds to households will save lives from a decrease in localized pollution and reduce emissions...

In this April 23, 2016, photo, David Goethel sorts cod and haddock while fishing off the coast of New Hampshire. To Goethel, cod represents his identity, his ticket to middle class life, and his link to one the country's most historic industries, a fisherman who has caught New England's most recognized fish for more than 30 years. (AP Photo/Robert F. Bukaty)

SEABROOK, N.H. (AP) — The cod isn't just a fish to David Goethel. It's his identity, his ticket to middle-class life, his link to a historic industry...

Greenpeace analysis suggests the majority of restrictions on fracking are based under EU legislation and could be undone following Brexit Reuters

Remain campaigners have argued that EU legislation has helped towards tackling water and air pollution, protect endangered species and imposed tough safeguards on the use of genetically modified crops and potentially dangerous chemicals...

 Britain's Prime Minister David Cameron announced Friday that he will quit as Prime Minister following a defeat in the referendum which ended with a vote for Britain to leave the European Union. CREDIT: AP Photo/Matt Dunham

The United Kingdom’s decision to leave the European Union Friday took the world and its markets by surprise, as implications of what happens now that the second largest economy in Europe is poised to exit the E.U. loom with no clear answers in sight...

British Prime Minister David Cameron announces his plan to step down in the fall, following a referendum in which voters decided the country should leave the European Union. (Ben Stansallben/Agence France-Presse via Getty Images)

It’s not just the upheaval in global financial markets...

This June 6, 2016 photo shows patches of dead and dying trees near Cressman, Calif. The U.S. Forest Service announced Wednesday, June 22, 2016, that the number of trees in California's Sierra Nevada forests killed by drought and a bark beetle epidemic has dramatically increased since last year. Photo: Scott Smith, AP

An estimated 66 million dead trees in a six-county region of Southern California are a tinder box just waiting to be ignited, US officials say...

Frederica Perera (Credit: Columbia.edu)

Children suffer the most from fossil fuel burning...

Children walk along a spur of Peru’s main oil pipeline near the village of Mayuriaga, where a spill in February affected more than 20 communities along the Morona River. Photo by Barbara Fraser.

A new oil spill from the pipeline that carries crude oil from the northern Peruvian Amazon across the Andes Mountains to the Pacific coast has raised fears of yet more pollution of the water and fish on which indigenous villages and riverside communities depend...