Odds that global warming is due to natural factors? Slim to none

An analysis of temperature data since 1500 all but rules out the possibility that global warming in the industrial era is just a natural fluctuation in the earth's climate, according to a new study by McGill University physics professor Shaun Lovejoy.

Slowdown of global warming fleeting

The recent slowdown in the warming rate of the Northern Hemisphere may be a result of internal variability of the Atlantic Multidecadal Oscillation -- a natural phenomenon related to sea surface temperatures, according to Penn State researchers.

Report: Permafrost thawing could accelerate global warming

A team of researchers lead by Florida State University have found new evidence that permafrost thawing is releasing large quantities of greenhouse gases into the atmosphere via plants, which could accelerate warming trends.

The causes and consequences of global climate warming - 56 million years ago

The growing and justified concern about the current global warming process has kindled the interest of the scientific community in geological records as an archive of crucial information to understand the physical and ecological effects of ancient climate changes.

Is global warming hiding underwater?

Satellite observations of global sea-surface temperature show that a 30-year upward trend has slowed down within the last 15 years. Climate scientists say this is not the end of global warming, but the result of a rearrangement in the energy flow of the climate system and, in particular, how the ocean stores heat.

Claim: Nature selectively buffers human-caused global warming

Can naturally occurring processes selectively buffer the full brunt of global warming caused by greenhouse gas emissions resulting from human activities? Yes, find researchers from the Hebrew University of Jerusalem, Johns Hopkins University in the US and NASA's Goddard Space Flight Center.

'Missing heat' discovery prompts new estimate of global warming

An interdisciplinary team of researchers say they have found 'missing heat' in the climate system, casting doubt on suggestions that global warming has slowed or stopped over the past decade.

Global warming as viewed from the deep ocean

Some climate change skeptics have pointed out that global atmospheric temperatures have been stable, or even declined slightly, over the past decade. They claim it's a sign that global warming has either ceased, slowed down or is not caused by human activity. So, where did all that heat that we're supposedly producing go?

'Stadium waves' could explain lull in global warming

One of the most controversial issues emerging from the recent Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) is the failure of global climate models to predict a hiatus in warming of global surface temperatures since 1998.

Report: Global warming increases severe thunderstorm risk

In 2012, 11 weather disasters in the United States crossed the billion-dollar threshold in economic losses. Seven of those events were related to severe thunderstorms. New climate analyses led by Stanford scientists indicate that global warming is likely to cause a robust increase in the conditions that produce these types of storms across much of the country over the next century.

From global warming to record heat

Drought shriveled crops in the Midwest, massive wildfires raged in the West and East Coast cities sweltered. The summer of 2012 was a season of epic proportions, especially July, the hottest month in the history of U.S. weather record keeping. And it's likely that we'll continue to see such calamitous weather.

Claim: Global warming caused by CFCs, not carbon dioxide

Chlorofluorocarbons (CFCs) are to blame for global warming since the 1970s and not carbon dioxide, claims new research from the University of Waterloo recently published in the International Journal of Modern Physics B.

The tropical upper atmosphere "fingerprint" of global warming

In the tropics at heights more than 10 miles above the surface, the prevailing winds alternate between strong easterlies and strong westerlies roughly every other year.

NASA: Global warming increases the risk of extreme weather

A NASA-led modeling study provides new evidence that global warming may increase the risk for extreme rainfall and drought.

'Winnipeg moves to Minneapolis' as northern US warms

Northern latitudes are greening up, says a NASA-funded study, increasingly resembling the lusher latitudes of the south.

Global temperatures now highest for thousands of years

The Earth's only been this warm for about a quarter of the time over the last 11,300 years, a new reconstruction of the planet's temperature history shows.

Global warming turned Sandy into superstorm

Last October's Superstorm Sandy was made far worse by the melting of Arctic sea ice, new research suggests.

Volcanoes, not pollutants, damp down global warming

Global warming over the last ten years or so would have been more extreme if it weren't for volcanoes, says a team from the University of Colorado, Boulder.

'Frozen' atmospheric waves trigger extreme weather events

Another report has linked man-made climate change with extreme weather events around the world, including recent heat waves in the United States and Russia and the unprecedented Pakistan flood.

Melting Siberian permafrost threatens major methane release

It could take as little as a 1.5 degree rise in global temperature to thaw Siberia permanently, potentially releasing catastrophic levels of cartbon dioxide and methane from the soil.