cannot predict such things
because they are stupid and they dont realize that if we DID have a nuclear war they would be blasted off the planet of the earth and billions of trillions of people would die. nuclear war is NOT an option for war. but war in general is just plain dumb anyway thoguh.
You do not say what will harm the earth. The earth is a dynamic planet, if it did not have the processes which cause earthquakes and volcanoes it would be a dead planet. While earth stays dynamic, constantly active, it is the perfect place for us.
This question is relevant in the situation that the world is going to an end. It may be by a natural disaster or a nuclear war. Then we have to find someother planet like earth to live. And if the scientists cant find a planet like earth, they might consider to research on how to survive on such chaotic conditions.
The Cold War had the potential to severely impact the earth through the effects of expolding hundreds of nuclear weapons if it ever became a hot war. But as the Cold War did not result in a nuclear confrontation, it had esseentially no impact on the earth.
This was possibly Mars. After Mars became unlivable, man moved to earth; in two groups.
A nuclear war can alter the amount of daylight received during the day, but not the rotation of the Earth. The term "nuclear winter" refers to this effect. The theory goes that, just as with volcanic eruptions, if a large number of nuclear bombs were detonated, the fallout sent into the atmosphere would block enough sunlight to make the surface temperature colder, killing a large percentage of plant life (and, subsequently, animal life) on the planet. Therefore, in terms of sunlight reaching the planet surface, a nuclear war could actually reduce the length of a day. The Earth itself would continue rotating at the same speed, though.
Gears of war is not set on Earth it is set on Sera, so its not our future its their present.
Nuclear holocaust refers to the possibility of nearly complete annihilation of human civilization by nuclear warfare. Under such a scenario, all or most of the Earth is made uninhabitable by nuclear weapons in future world wars. But if you think about it, with thousands of nuclear warheads, hot-headed dictators and some warheads unaccounted, the END COULD BE NEAR!
due to of course nuclear fallout it would take 10,000 years for the earth to regrow(heal) itself.
Everyone will die, So don't start one.
Mars
Earth is invaded by aliens from another planet.