Half in jest, half in earnest British Guardian has compiled a list of various doomsday scenarios to answer the question of the future of humanity.
"In a world of infinitely many hopes, but not for us" — once said the Austrian writer Franz Kafka. Journalists and scientists agree with him: the human race is not eternal. From a scientific point of view, the danger to humanity harbors space geology of our planet and the man himself.
Danger from Space
Astronomers argue that the Earth's collision with an asteroid is just a matter of time. It is estimated that the heavenly bodies with a diameter greater than one kilometer, fall to Earth every 100,000 years, while the asteroids with a diameter of more than six miles, which may cause the end of the world — once every 100 million years. If not, life on Earth would break because the sun will turn into a "red giant", increasing in size. It does not happen soon, but it is inevitable: a billion years. The temperature at the Earth's surface to reach incompatible with the life of 1000 degrees, and after a while the solar system becomes a planetary nebula with a "white dwarf", the size of Earth, inside. "That's why we need to colonize other solar systems," — says Jason Matheny, project manager of governmental programs of advanced study U.S. intelligence (Intelligence Advanced Research Projects Activity, IARPA).
Land is not safe
However, poses a danger to humanity, not only space, but also the planet. We are talking about natural disasters — tsunamis, earthquakes and volcanic eruptions, which can cause man-made disasters, as happened in Japan in March 2011. Geologists have warned that the eruption of La Palma in the Canary Islands could be the final episode in the history of civilization. La Palma — the third highest island in the world in relation to its area. If awakened volcano located here, the explosion it may form waves km altitude, which immediately reached the shores of Europe, Africa, and then — North and South America.
Another danger — a reversal of the poles of the planet. In 2003 with the help of the Danish satellite "Orsted" scientists have data from which it follows that the geodynamics of the Earth behaves as if the pole of the planet will soon be swapped. Change the navigation system then maybe nobody will, because in the process of inversion of the magnetic field will be reduced, resulting in dramatically increase the impact of solar radiation on humans. It is known that the previous reversal occurred about 780,000 years ago and lasted for several thousand years. According to some researchers, it was accompanied by a mass extinction of organisms. But for sure this no one can say.
The main threat to life on Earth — the man himself
Experts agree that in the shorter term, the main risk for the people still did not come from the forces of nature, but from within. In 1962, during the Cuban Missile Crisis confrontation between two nuclear powers — the U.S. and the Soviet Union — the world almost led to an armed conflict, which could easily lead to a nuclear Armageddon. To date, the number of countries possessing nuclear weapons or the technology of its production has increased. It is believed that part of their list, and the Jewish state located in the volatile Middle East region.
Do not forget about the possible catastrophic consequences of climate change and the depletion of natural resources, including arable land. Environmentalists are sounding the alarm. According to the World Wildlife Fund (WWF), the diversity of species on the planet has decreased from 1970 to 2007 at 30, and in tropical regions — by 60 percent. However, the amount of natural resources consumed by mankind has doubled since 1966. Experts estimate the fund, mankind is now a year requires a tremendous amount of resources equivalent "Produced by Earth for one and a half years." If this level of consumption continue, by 2030 a year on average will consume natural resources produced by our planet in two years. To survive, the human race will literally need a "second planet".
It is regrettable that few think about how they would quickly overcome the adversity that humanity is still on forces to cope — says the British edition. As for the death of the sun, it is in their list is not included, as opposed to war, poverty and hunger.