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We have reached the climate tipping point much more quickly than anybody anticipated. But with methane outgassing in arctic tundra and beginning to boil up from under the Arctic Ocean, Greenland ice turning black due to lack of snowfall, and rapid warming of northern waters, the stage is set.

Nobody has any idea when dramatic changes will overtake us, but the form they will likely take is becoming more clear. It is likely that, when arctic temperatures spike during some summer soon, the jet stream will fail because the temperature difference between the atmosphere in the far north and mid-latitudes will not be enough to enable it to continue.
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Climate change is already upon us, experts say, and we are already feeling its adverse effects in the form of extreme weather events: scorching temperatures leading to droughts, torrential rains causing widespread flooding, and record freezes bringing feet of snow.

But what of the less obvious effects of global warming?

It seems that climate change is impacting life across the whole planet in the most unexpected ways: a new study suggests that the increasing acidification of ocean waters caused by rising atmospheric carbon dioxide levels could rob sharks of their ability to sense the smell of food.
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This weekend, hundreds of thousands of people will take to the streets for the People’s Climate March, part of the biggest global protest ever to highlight the issue of climate change.

The march will take place in New York on September 21st, ahead of a major United Nations summit that is bringing together government leaders from around the globe to discuss this global emergency. Satellite marches will also take place in a variety of other locations around the world (see http://peoplesclimate.org/global/ for more details).
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A routine survey of the U.S. Atlantic Coastline recently revealed a strange phenomenon. Multitudes of gas plumes were seen bubbling up to the ocean surface, and though the gas has yet to be analyzed, scientists are almost certain that it is methane.

"We don’t know of any explanation that fits as well as methane," said lead study author Adam Skarke, a geologist at Mississippi State University in Mississippi State.
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