'Shade balls' have been dumped into Los Angeles reservoirs to protect the region's water supply from contaminants and from evaporation.
A spill that sent toxic water seeping from an abandoned Colorado gold mine is three times as large as first thought.
Obama's clean-energy plan may fall short of its goals. Here's why, says Entelligent CEO Thomas Stoner.
Sea levels are rising around the world, but they are rising faster in Washington, according to a new study.
A British power plant may be the first in the world to emit less greenhouse gases than it emits, if all goes according to plan.
The corporate aftermath of Cecil the lion's death continues, with some positive and some negative updates for companies.
West Virginia Attorney General Patrick Morrisey, shares his objections to President Obama's carbon plan.
President Obama unveiled his plan to tackle climate change by reducing greenhouse gas emissions.
President Obama is unveiling the first-ever limits on power plant carbon emissions today. Brian Deese, White House senior advisor, discusses emission targets, and investments in cleaner sources of energy to fight climate change.
News that the lion's ally Jericho was killed has been denied by researchers, as the hunter who admitted he killed Cecil is in touch with feds.
Warmer summers and other factors have experts predicting the polar bear may not be able to deal with a warming climate.
The U.S. Fish and Wildlife Service has been trying to find the man who shot a lion in Zimbabwe, but he is not responding.
The Earth will be quite a bit more crowded in 2050—with nearly 2.5 billion more people than now.
The hunting and much-publicized death of Cecil the lion has cast a light on the controversial and lucrative business of game hunting in Africa.
A popular lion shot in Africa has reignited a debate about whether big game hunting helps conservation efforts.
A number of leaders are calling on states once again to secede from the union, says Terry Tamminen. Here's why.
On a tour of his latest Singapore residential project, star architect Moshe Safdie told CNBC how he ensured that each apartment owner got a great view of their community.
Public urination has become enough of a problem in San Francisco that the city plans to cover public walls with a paint that repels pee.
Competition for water is forcing companies and governments to treat water as a more precious resource than they have in the past.
Mexico is buying a lot of natural gas from the United States, and that may help it achieve ambitious climate goals.