Siberian holes could be ‘visible effect’ of climate change

(Photo: AP)

There’s a scary answer for why Siberia is turning into Swiss cheese: Mother Nature has gas, so to speak, and we gave it to her.

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'Unstoppable' Antarctic ice sheet collapse has begun, scientists say

(Photo: James Yungel / NASA)

Two teams of scientists say the long-feared collapse of the West Antarctic Ice Sheet has begun, kicking off what they say will be a centuries-long, “unstoppable” process that could raise sea levels by as much as 15 feet.

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(Source: NBCNews.com)

Rubio: Humans not to blame for climate change

(Photo: Jim Cole / AP)

Potential 2016 presidential candidate Sen. Marco Rubio isn’t willing to blame human activity for the dramatic changes in weather in the world and doesn’t think we can do much about it.

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(Source: NBCNews.com)

Artist shows how climate change could leave cities under water

(GIF via NickolayLamm.com)

The new White House report that issued a dire warning about the nation’s changing climate comes on the heels of another study that illustrated how those changes could leave the world’s largest coastal cities submerged in water.

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(Source: TODAY.com)

American Doomsday: White House warns of climate catastrophes

(Photo: Jim Lo Scalzo / EPA file)

Scorching temperatures, flooded cities, wildfires and changes in the growing season are just some of the hard realities of a changing climate that are beginning to hit Americans directly, says a new White House report.

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(Source: NBCNews.com)

Our year of extremes: Did climate change just hit home?

(Photo: Joe Raedle / Getty Images file)

The dazzling icescape at the top of our planet is mutating into a place that is barely recognizable to those who have studied it for years.

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(Source: NBCNews.com)

Massive U.N. report says climate risks go beyond red alert

(Photo: Mike McMillan / USFS via Reuters file)

Global warming is driving humanity toward a whole new level of many risks, a U.N. scientific panel reports, warning that the wild climate ride has only just begun.

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(Source: NBCNews.com)

Number of Americans who don’t believe in climate change rises

(Photo: Joe Raedle / Getty Images)

The number of Americans who believe global warming isn’t happening has risen to 23 percent, up 7 percentage points since April 2013.

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(Source: NBCNews.com)

Climate change threatening polar bears in Canada

(Photo: Laura Allenbaugh / NBC News)

Polar bears currently outnumber the residents of a small town in Canada’s tundra, but that may change soon. Climate change has sped up the ice melting season in Churchill, Manitoba, a town of about 800 residents — and 900 polar bears.

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(Source: NBCNews.com)

'Extremely likely': Humans blamed more clearly than ever for global warming

(Photo: Reuters file)

A group of top climate scientists found in a new report that human beings needs to limit all man-made carbon emissions below a total of 1 trillion tons in order to limit climate change – and noted that the planet had already reached half that amount by 2011.

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(Source: NBCNews.com)

Final verdict expected Friday: Humans caused global warming

An international panel of scientists is expected to issue a report Friday that dismisses nearly every doubt that human activity has caused temperatures to warm, glaciers to melt, and seas to bulge since the middle of last century. 

(Source: NBCNews.com)

Extreme heat waves to quadruple by 2040, study says

The type of heat waves that wilt crops, torch forests — and kill people — are expected to become more frequent and severe over the next 30 years regardless of whether humans curb emissions of the greenhouse gas carbon dioxide, according to a new study.

(Source: NBCNews.com)

Obama: No time for ‘flat-earth society’ on climate change

(Photo: NBC News)

President Barack Obama laid out a far-reaching set of proposals meant to address the driving causes of climate change, headlined by a new directive to begin limiting carbon emissions for new and existing power plants and the announcement of high environmental standards for the proposed Keystone XL oil pipeline to be met before his administration signs off on the project.

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(Source: nbcnews.com)

Warmest springs on record bring earliest flowers ever

(Photo: Libby Ellwood / Boston University)

During the exceptionally warm springs of 2010 and 2012, plants bloomed earlier in the eastern U.S. than they have since the American writer and naturalist Henry David Thoreau started keeping records near Walden Pond in 1852.

Killer whales’ plight in ice an example of climate change impact, researcher says

(Photo: Clement Rousseau)

The plight of a pod of killer whales that got trapped by ice in a mostly frozen Canadian bay this week was a “good example of what climate change can do” in the Arctic, a researcher said Friday.

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