Weather Sun. Every few days, the variations in solar magnetic storm will create a large, known as coronal mass ejection (CME). "This thing took out billions of tons of particles with speeds over 8 million kilometers per hour," said Pal Brekke of the Norwegian Space Centre in Oslo. And more often, sun weather disrupt our path.
In March 1989, CME big hit and threw the northern hemisphere in 1500 Gigawatt electricity (25 times the number of UK national grid) to the Earth's atmosphere. Electricity network in Canada on fire, and six million people lost their source of electricity around nine hours.
"Duration of a very long power outages might make sense," said John Kapperman from Metatech Corporation, a U.S. government representative who investigated the impact of a severe solar storm.
Infrastructure that are critical gates such as drinking water, availability of food and medicine, waste management, transport and communications, all will be paralyzed for several days.
"Ironically, this is most likely to occur in most developed countries with an electric power have the most connections, so that the most severely affected," said Kappenman.
Asteroid Impact. At June 30, 1908, a 30-meter-sized asteroids are thought to have crashed at Tunguska River, Siberia. The blast equivalent to two megatons of TNT was caused shock waves and flatten an area of 400 square miles of forest and kill some deer and other animals. If there is a similar asteroid crashed into densely populated areas likely damage would be enormous.
Magnetic field reversals. Even so rarely, changes in the core of the earth means there is a change in the earth's magnetic, north becomes south and south becomes north. The latest amendment to the 780 thousand years ago, and it seems to be no sign that this will appear as soon as possible.
"The strength of the earth's magnetic field has been increased by approximately 8% over the last 150 years," said Nils Olsen of the Danish National Space Institute. "In some areas has increased by approximately 10% within 20 years."
Earthquake. In March 2010, Taiwan was shaken by an earthquake measuring 6.4 Richter. No reported deaths and few injuries, but so many buildings and bridges are damaged and the Tainan Science Park (main suppliers of computer memory chips and LCD television and a global monitor) was forced to close for several days.
"If a major earthquake shook the San Francisco area of California, this could be potentially end the supply of chips from several manufacturers Silicon Valley for several months," said Peter Sammonds, geophysicists at the University College London.
In this case the impact could be of global concern such as the supply of specialized products such as the use of hospital equipment and banks, which led to scarcity. Note that is not important, it is possible to be smartphone signal loss that can not access the Facebook and Google for a while.
Gunung Api. Periods of high activity in the mass then can cause the emergence of monsters such as the eruption of Male in 1783 where the killing of more than half a livestock population of Ireland and led to famine that occurred in a quarter of the human population.
Across Europe, thick fog prevented humans and raise the temperature of the air, causing thousands of deaths. It also led to the failure of rice crop in Japan and the weakening of the rainy season in Africa and India due to the incident.
Researchers estimate the part of the reasonableness of the Canary Island is a major landslide. If this happens, the incident will cause a tsunami that can break the underwater cable and flooded the east coast of the United States.
Methane circle. Pelepasam suddenly from one hydro methane gas from the greenhouse effect in the ocean can cause a dramatic acceleration of global warming that has ever happened in the past.
Cosmic Rays. Sudden increase in the level of cosmic rays from solar system that could result from flare around it, could trigger the 'ice age' that may cause mass extinctions of life on earth. [Ito]
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