CLIMATE CHANGE

The fifth Earth Day of Barack Obama’s presidency finds campaign promises still unfulfilled, but environmental advocates are still pushing.

Environmental conservation in an age of climate change is tough -- the big solutions necessary to fix things have their own associated risks.

From Earth Day 1970 to Earth Day 2013, one of the world's first environmental campaigns has come a long way.

An advocacy group warns that climate change will drive citizens of small Pacific island nations to flee to Australia and it should prepare now.

Thatcher was a staunch free-market advocate, but she also believed that economic growth should not come at the expense of the environment.

Aviation may be partly responsible for climate change, but a new study shows how climate change will return the favor with bumpier and longer flights.

By 2050, the Rocky Mountains will likely be more suitable for wine production than the Mediterranean, new research projects.

While the Arctic sea ice has been retreating over the past couple of decades, Antarctic sea ice has been expanding. What gives?

Climate change isn't threatening only to polar bears -- it has impacts on a lot of other wildlife, too.

Sea ice in the Arctic has become as extensive as it's going to get this year -- and it's the sixth-lowest maximum on record.

The global cost of natural disasters has tripled over the past three decades, but global warming is not the main culprit.

The fate of the Keystone XL pipeline will demonstrate whether President Obama plans to take a strong stance on mitigating climate change.

Scientists trace South African climate history by studying layers of fossilized urine left by generations of rock hyraxes.

American farmers and ranchers will face increasing challenges due to climate change, a government report warns.

If Americans worked less, like Europeans, global warming may slow down, thereby saving the planet, according to a liberal think tank.

Even if you live more than 1,000 miles away from the nearest metropolis, you could still be feeling the heat.

Donor-advised funds have reportedly channeled money from the Kochs to groups that deny the link between fossil fuels and global warming.

Andean glaciers are melting at much faster rates as a result of climate change and could disappear altogether in some parts, a new study finds.

Incredibly warm springs in 2010 and 2012 resulted in the earliest known flowering in 161 years at two sites in Massachusetts and Wisconsin.

The Bulletin of the Atomic Scientists is keeping its longtime Doomsday Clock at five minutes to midnight for 2013, and the committee of scientists and Nobel Laureates is urging President Barack Obama to address the threat of global climate change.

Eastern European tree samples confirm that the recent warming in the region is outpacing any natural climate variations seen since the Middle Ages.