And if tomorrow starts Yellowstone eruption?

A rough estimate based on geological evidence suggests that the chance of a new eruption of the Yellowstone volcano in our lives is 1:10 000. However, in reality, given the volatile nature of the volcano, it means nothing. Pocket of magma can erupt at any moment.
What will happen if it did happen? End of the World? Or just the collapse of the tourism industry in Wyoming (USA)?

Pocket of magma under Yellowstone National Park (Image National Park Service).
Jacob Lowenstern of the Yellowstone Volcano Observatory (USA) points out that every time when the volcano erupted in the past (and that was three times already), fell out over a thousand km ³ of magma. This is enough to cover most of North America, a layer of ashes of different thickness: 30 cm around and less than a millimeter in three thousand miles from the scene.
Therefore, in order to avoid a large number of victims in sufficient time to evacuate people from the vicinity of Yellowstone. But this is only the first few days. Following this, a more serious problem arises: the ash up in the air, breathing will be difficult for both people and plants. In addition, contamination of water occurs. Pretty soon begin a national food crisis. "Many will die," - promises to Stephen Self of Open University (UK). According to him, the crowd of American refugees break through the border with Mexico.
Perhaps, foreign governments will come to the rescue and begin a major operation to clear the ashes: to live without it in the Midwestern United States will not be another ten years, and even more (it all depends on how fast the rain washed away the ashes).
As for the rest of the world, he will face the light of climate change caused by a huge cloud of ash, which will bypass around the globe, plunging the planet into the shade for a few days and changing the chemical composition of the atmosphere for about ten years. By the way, recent studies indicate that global effects superizverzheny not so serious as previously thought, well, Yellowstone and did nevzrachen because its magma contains very little sulfur. It produces sulfur dioxide are the same particles, which cool the climate by blocking sunlight.
"The huge volume of magma means that a certain amount of sulfur does get into the atmosphere, but studies have shown that there is some kind of limit on the number of aerosols produced with the help of sulfur dioxide, - says Mr. Self. - Therefore, our earlier assumption that the major change occurs in temperature, are wrong. "
Based on new models, scientists now believe that the vast majority of species will survive the eruption of the Yellowstone safely super-(except, of course, those who will be in close proximity to it). In the geological record is not found evidence of mass extinctions, coinciding with superizverzheniyami.
The last eruption of the Yellowstone today happened 640 thousand years ago, and the previous two - 1.3 and 2.1 million years ago, and each was a little less ambitious than the previous one. Apparently, the "hot spot" cools, which, however, does not negate the possibility of her last "hurray."