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A new classification of the end of the world: three major threats

A new classification of the end of the world: three major threatsMany scientists refer to the doomsday scenario as fiction, not serious science, so "normal" disasters such as earthquakes, learn much more active. But there are experts who study extreme events on Earth and in space, which may one day destroy us all.

According to them, three major threats to our existence - it is solar storms, cosmic collisions and supervolcanoes. This writes sciencemag.org.

Threat 1: Solar storms

The so-called solar storms - one of the greatest threats to mankind. They are a source of huge solar flares, when there is an emission of charged particles that destroy the Earth's magnetosphere, that is the region of space dominated by the influence of the magnetic field of our planet. Solar storms can produce harmful effects in the long-distance electric power lines. These effects last only a few minutes, but can cause fatal damage.
The risk that huge geomagnetic storm of this magnitude occur until 2022, is 12%.

"We (the people in the world - Ed.) have done an amazing job to become vulnerable to this threat", - says Bill Marteg, Deputy Director of the Office of space weather science and technology policy of the White House.

Extensive power outages will be a disaster for the information technology, operation of pipelines and water pumps.

The probability of a major solar storm in our lifetime is very high. According to scientists, the phenomenon like "Carrington event" to occur about once in two centuries. According to the findings of a large study of 2012, the risk that the Earth will become a victim of powerful geomagnetic storms in the next ten years, that is, even before 2022, is 12%.A new classification of the end of the world: three major threats

Threat 2: Cosmic collision

The second threat also comes from outer space and is connected with the danger of falling to Earth near-Earth objects. The definition of "near-Earth objects" includes all objects of the solar system, close to the Earth, with the exception of the planets, dwarf planets and moons. In other words, it is about 14 thousand asteroids, over 100 comets, meteors and space several apparatah.Malenky space object can extinguish the sun for several months.

First, Earth's collision with a comet or asteroid will lead to a series of earthquakes and tsunamis, but they become deadly and dust. As demonstrated by modeling the situation, an object with a diameter only one meter is able to raise so much dust that the sun for a few months would be hidden behind a cloud of dust.

Threat 3: Supervolcanoes

The third threat seems more plausible cause of future apocalypse, as occurs much more frequently than the cosmic collision. Approximately every 100 thousand years somewhere supervolcano erupts and pours out endless streams of lava.
Who in the world - seven supervolcano, including Yellowstone in the US, New Zealand and Taupo Indonesian Toba. Currently, none of them is not a direct threat. But in the case of the eruption will burn everything in a radius of hundreds of kilometers around, and the ashes will cover all continents.

Withering ash

When 640,000 years ago, the last time the volcano erupted Yellowstone, suffocating layer of ash covered all of North America, and the Earth's climate has changed dramatically.
Ashes can destroy buildings, disabling water pipes and electronics. But the worst consequence of the eruption of supervolcano - is its impact on the climate. Like a cosmic collision, a supervolcano can make the temperature of the Earth is many times lower than the current one. When a drop of liquid sulfuric acid after the eruption fall into the stratosphere, the world would be five to ten degrees colder, and the effect will be kept up to ten years. This will destroy the world agriculture.

Fortunately, it is unlikely that the end of the world took place in the near future. But now you know what the three scenarios to be feared.
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