India tests ways to help farmers cope with climate change

Concerns about how climate change may be affecting India are bringing fresh urgency – and funding – to longstanding challenges in sustainable agriculture.

Carbon tax: It's not coming soon

A US carbon tax would raise revenue for the federal government. But there are three reasons a carbon tax won't be part of any budget compromise in the next few weeks.

Are polar ice sheets shrinking? Report offers definitive answer at last.

Numerous studies in recent years have offered different – and sometimes conflicting – views about ice sheets in Greenland and Antarctica. But a new report offers unprecedented scope.

UN: 2012 was one of the hottest years ever

Climate Change Conference-goers in Doha learned Wednesday that 2012 will go down as one of the hottest years on record. A provisional statement by the UN warns of rising temperatures and melting ice.

Why greenhouse gases hit record high in 2011

Carbon dioxide, the primary greenhouse gas emitted by human activities, reached 390.9 parts per million last year, or 40 percent above the pre-industrial level, the World Meteorological Organization said. It cited fossil fuel as the primary source.

World Bank: Tackle warming or poverty remains

Climate change will hit all nations, but especially the poor ones, says new World Bank report. Warming could flood Vietnam and Bangladesh, dry out other areas, causing water scarcity. 

Focus: How will New York keep out a rising sea? Dikes, huge sea wall, oyster beds?

After superstorm Sandy, New York officials look for long-term solutions against future floods from storm surges. Many options, little consensus.

Appearance of explosive WWI relics underscores Alps glaciers' retreat

The Alps' glaciers are in retreat at an alarming rate due to rising temperatures – as indicated by the discovery of rusted explosives left over from a nearly hundred-year-old cache.

Blocking patterns: How global warming might have worsened US drought

Two teams of researchers find that subtle changes brought about by global warming might be amplifying atmospheric blocking patterns, which keep weather conditions in place for a long time.

Obama vs. Romney 101: 4 ways they differ on climate change

As recently as 2008, presidential candidates openly sparred over their own plans for dealing with climate change. This year it's such a touchy topic that both sides prefer instead to talk about energy policy – a kind of proxy. Here are four ways the candidates differ.

Independent review of IPCC and its global warming reports: an answer to critics

Top international scientists will take part in an independent review of the Intergovernmental Panel on Climate Change (IPCC) and its reports on global warming, which have been widely criticized recently for inaccuracies.

Carbon emissions increasing acidity in Alaskan seas

Carbon emissions affect more than the climate. Scientists now suspect they are also making Alaskan seas more acidic.

Plant scientists build a 'Sears catalog' for corn genome

Ways to help wildlife adapt to a warmer world

As the world gets warmer, strategies for helping wildlife adapt.

Saving wildlife in a warmer world

A warmer world will have adverse effects on wildlife. We can help save animals, but it will take savvier approaches, scientists say.

China confronts global warming dilemma

China, the world leader in both economic growth and carbon emissions, faces the dilemma of how to respond to the challenges of global warming while not harming its robust economy.

The secret life of ancient trees

An ancient evergreen tree reveals its secret life to scientists, helping them decode climate history.

Water supply of millions threatened by melting of Kashmir's glaciers

New study by scientists in India finds that the biggest glacier in the Indian portion of Kashmir has shrunk, imperiling the water supply of millions of people in the region..

More heat, humidity coming to southern California, scientists predict

Since 1990, heat waves with high humidity have increased in both frequency and intensity in southern California.

Mexico cuts down trees to save monarch butterflies

Many fir trees in Mexico that provide winter homes for monarch butterflies are being killed by bark beetles.