Gorillas are being murdered in Congo. CNN's Anderson Cooper reports.
The AC360 Planet in Peril team in Taiwan reveals shark finning - a brutal practice ruining the ecosystem.
The dwindling march of the penguins is signaling that the world's oceans are in trouble, scientists now say.
Global warming could destabilize "struggling and poor" countries around the world, prompting mass migrations and creating breeding grounds for terrorists, the chairman of the National Intelligence Council told Congress on Wednesday.
A Pennsylvania town considers a ban on couches on front porches and lawns. WFMZ reports.
The state of Florida has agreed to buy nearly 200,000 acres of land from a major sugar producer in a $1.7 billion deal to help restore the Everglades, Gov. Charlie Crist announced Tuesday.
Anderson Cooper on assignment for Planet In Peril: Battle lines with his reporter's notebook from Africa.
While traveling through the Cameroonian jungle, the Planet in Peril team encounters a slight hurdle. Sanjay Gupta vlogs.
Anderson Cooper's sneak peak of Planet in Peril: Battle Lines. He's looking at the last remaining mountain gorillas.
Gorillas are being murdered in Congo. CNN's Anderson Cooper reports.
The AC360 Planet in Peril team in Taiwan reveals shark finning - a brutal practice ruining the ecosystem.
The dwindling march of the penguins is signaling that the world's oceans are in trouble, scientists now say.
Global warming could destabilize "struggling and poor" countries around the world, prompting mass migrations and creating breeding grounds for terrorists, the chairman of the National Intelligence Council told Congress on Wednesday.
A Pennsylvania town considers a ban on couches on front porches and lawns. WFMZ reports.
The state of Florida has agreed to buy nearly 200,000 acres of land from a major sugar producer in a $1.7 billion deal to help restore the Everglades, Gov. Charlie Crist announced Tuesday.
Anderson Cooper on assignment for Planet In Peril: Battle lines with his reporter's notebook from Africa.
While traveling through the Cameroonian jungle, the Planet in Peril team encounters a slight hurdle. Sanjay Gupta vlogs.
Anderson Cooper's sneak peak of Planet in Peril: Battle Lines. He's looking at the last remaining mountain gorillas.
Whaling fleets nearly wiped out North Atlantic right whales last century. Now these huge mammals are threatened by other human behavior: big ships, fishing gear and entanglement in federal bureaucracy.
Government scientists want big ships to slow down near endangered right whales. CNN's Miles O'Brien reports.
Polar bears will now be listed as "threatened" under the Endangered Species Act.
CNN's Miles O'Brien investigates the loss of wetlands in Louisiana and what needs to be done to save them.
Nicole Lapin talks to Hayley and Connor Gilbert about a program that shows kids how climate change affects polar bears.
Arctic scientist Derek Mueller discuses possible new signs of global warming in northern Canada.
Mountaintop mining produces a lot of America's coal, but is it hurting the health of the surrounding communities?
Salmon fishing is banned for the entire West Coast for the first time ever. CNN's Dan Simon reports.
There isn't anything metropolitan about this tiny unincorporated town in southwest Wyoming, where a few single-family homes and a volunteer fire station stand against a skyline of snowcapped mountains.
A survey of bee health released Tuesday revealed a grim picture, with 36.1 percent of the nation's commercially managed hives lost since last year.
Koalas are threatened by the rising level of carbon dioxide pollution in the atmosphere because it saps nutrients from the eucalyptus leaves they feed on, a researcher said Wednesday.
Critics say bison in Yellowstone National Park are being slaughtered unnecessarily. CNN's Dan Simon reports
It's a tale of homeland security concerns blocking wildlife management, and the hue and cry that ensues.
CNN's Rusty Dornin reports on a barrier against efforts to preserve the jaguar -- the border wall with Mexico.
For years, the sea lions lounging at the Bonneville Dam have had easy pickings from salmon waiting to go up fish ladders to upriver spawning grounds.
Federal authorities have declared the West Coast ocean salmon fishery a failure, opening the way for Congress to appropriate economic disaster assistance for coastal communities in California, Oregon and Washington.
A federal judge has ordered the government to decide within 16 days whether polar bears should be listed as a threatened species because of global warming.
Montana cattle ranchers are at odds with conservationists over the population of bison.
Rangers at Yellowstone National Park find themselves caught in the middle of the debate over the bison population.
More than half of Yellowstone National Park's bison herd has died since last fall, forcing the government to suspend its annual slaughter program.
Yellowstone officials face fierce criticism for slaughtering bison to prevent the spread of disease.
R.E.M. singer Michael Stipe talks with Anderson Cooper about lending a song for the trailer of 'Planet in Peril.'
Major greenhouse gases in the air are accumulating faster than in the past despite efforts to curtail their growth.
Rosemary Lowe scoops up a shovel of dirt and dumps it into a hole around the base of a slender cottonwood tree.
Hundreds of Environmental Protection Agency scientists complain they have been victims of political interference and pressure from superiors to skew their findings, according to a survey released Wednesday by an advocacy group.
Riots from Haiti to Bangladesh to Egypt over the soaring costs of basic foods have brought the issue to a boiling point and catapulted it to the forefront of the world's attention, the head of an agency focused on global development said Monday.
U.S. President George W. Bush has ordered the release of $200 million in emergency aid to help countries where the soaring cost of basic food has spurred riots and instability.
President Bush on Wednesday called for halting the growth of U.S. greenhouse gas emissions by 2025 and said Congress -- not judges or regulators -- should take the lead role in grappling with global warming.
Revising his stance on global warming, President Bush proposed a new target Wednesday for stopping the growth of the nation's greenhouse gas emissions by 2025.
A growing food crisis has prompted protests in some spots around the world. CNN's Brian Todd reports.
Shell Oil President David Sexton talks about the "eco-marathon" to promote environmentally-friendly vehicles.
The stunning collapse of one of the West Coast's biggest wild salmon runs has prompted even cash-strapped fishermen to call for an unprecedented shutdown of salmon fishing off the coasts of California and Oregon.
CNN's Harris Whitbeck tours Rio de Janeiro's most violent slum, which is ground zero in the dengue fever epidemic.
Curt Mann's neighbors are livid, accusing him of erecting an ugly wind turbine among their historic homes for no other reason than to show off his environmental "bling."
Several prominent leaders in the Southern Baptist Convention said Monday that Baptists have a moral responsibility to combat climate change -- a major shift within a denomination that just last year cast doubt on human responsibility for global warming.
The gray wolf was officially removed from the Endangered Species Act's "threatened" list Friday after three decades -- a decision that has stoked controversy among environmentalists and ranchers.
The shooting deaths of four mountain gorillas -- three females and an alpha male silverback -- are prompting a United Nations agency to send a mission to the Democratic Republic of Congo.
Call it modern horse-trading. Balancing the nation's energy needs with its interests in protecting wildlife and habitats.
Iceland may be best known for world-famous musical export Bjork but there's a new star quickly gaining this island nation worldwide acclaim -- clean energy.
Explorer Dennis Schmitt found an island nearly two years ago near Greenland.
By the year 2050, China will no longer be the most populous country in the world.
The Amazon rainforest is so vast and full of life that even its defenders don't know exactly what it is they are protecting.
The Environmental Protection Agency agreed to weaken an important part of its new smog requirements after being told at the last minute that President Bush preferred a less stringent approach, according to government documents.
Former Vice President Al Gore on Monday launched a three-year, multimillion-dollar advocacy campaign calling for the U.S. to reduce its greenhouse gas emissions.
From Rome's Colosseum to the Sydney Opera House, floodlit icons of civilization went dark Saturday for Earth Hour, a worldwide campaign to highlight the waste of electricity and the threat of climate change.
From krill to king crabs, the collapse of a 160-square-mile portion of the Wilkins Ice Shelf in Antarctica could mean many changes for wildlife at the bottom of the world.
California regulators have drastically cut the number of zero-emission vehicles required to be sold in the state by the year 2014, a decision that frustrated environmentalists but came as a relief to auto manufacturers.
