3. Nuclear war
One thing is certain: nuclear war is going to end the world! Other dangerous things mentioned above may be easily avoided—not entirely, but still, we can’t escape from a nuclear war. In the 4 km-radius blast zone, a nuclear explosion from one of today’s most potent weapons would result in an 80–95% death rate, but “severe damage” may spread six times as far.
However, we should be more concerned about the nuclear winter than about mortality rates. At this point, the earth is covered in clouds of smoke and dust that obstruct the sun, perhaps resulting in a prolonged period of low temperatures.
A nuclear war between the US and Russia, who own the great bulk of the world’s arsenal, might result in the detonation of 4,000 warheads, which would result in an unknown number of deaths and an 8-degree Celsius reduction in global temperatures for four to five years.
Anarchy and bloodshed would break out if humans were unable to produce food. Remember that Mad Max scenario I was talking about? This is going to be the same. The worrying thought is that nuclear weapons can be released at any time and end the world in a matter of seconds…
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Once robots and artificial intellegence is started, it can program itself to eliminate all forms of outside controls of itself.
Yes, the threat to humans of global warming is real, but there is another, related but opposite threat, to wit, global cooling. This could be caused by climate engineering to reduce global warming. There are already a number of companies working on various technologies to ameliorate warming. If one or more of these technologies are implemented with-out appropriate restraint and direction, disaster could befall us.
Another threat, not to life, but to technology, is satellite debris. As space junk accumulates, the possibility of it smashing into the myriad satellites already in similar orbits increases. These smashed-into satellites could become more caroming debris, set off a chain reaction that could wipe out the satellites and the numerous systems dependent on them.
Not being scientifically educated this scares me to death. Hope we can find solutions. I know we can’t last forever.
In 100 million years any of those scenereos would not be visible on the lush green earth that an alien could visit. Only the Asteroid, if large enough could completely remove 100% of life from the planet.
GOD is in control
Disasters and crisis. the manmade ones are preventable by removing the corrupt politicians that only see to expand their wealth and power. Where once we had statesmen who served the people we now have power hungry who want only rule. Claiming that only government can save us from destruction. yet destruction is the norm under their administrations. When have we ever seen our government or any government build anything that lasts or even on budget. They enrich their supporters and relatives using our ( INVESTMENTS) Taxes. billions left unaccounted for. yet when asked about them display get hurt feelings that we the people should even ask accountability. and refuse to prosecute when proven fraud and deceit. We can avoid these crisis. The ones by nature, not so much!–I, Grampa
No matter what man does, he can not completely destroy the earth. He might damage it some, but only God will destroy it and it says that in Revelation He is going to destroy the earth with fire. It has to be fire as we have too much disease, trash, and old cars to do anything else. God is not going to destroy the earth until He is ready. When I look around and see all the paper, glass, and old cars it breaks my heart that we have people who have not done a better job with the earth God created.