Comments by "Nigel Johnson" (@nigeljohnson9820) on "Soaring temperatures in Siberia causes alarm for climate scientists" video.

What is concerning is that these high temperatures may indicate the planet has reached a tipping point, where positive feedback leads to a runaway greenhouse effect, as might result from the freeing of methane and other greenhouse gasses from the deep Ocean hydrate ice or from me!ting permafrost. Once on the slippery slope of positive feedback, there will be little humans can do to stop the planet switching to a new stable state. A state that is unlikely to be good for human or any other life on this planet.
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@KT Chong the world will not end, just the human race and all other life on the planet.
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@littlet-rex8839 there is no doubt that the rise in global temperatures is man made. The scientific evidence is overwhelming. It is difficult see why you think some humans will survive. If the eco systems is destroyed, the human race will be extinct.
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@jumpers go splat evolution takes generations to happen. It is a process of selecting out those who are genetically adapted to the changed environment. There may be a few of the current generation that are better able to survive elevated temperatures and lack of water, but this trait would need to be enhanced over generations. With the speed the climate is changing, it is more likely that humans will become extinct, along with much of the other life on the planet. It isn't necessarily the human ability to survive elevated temperatures that will decide our fate. There are many other organism's that we depend upon. If they become extinct, so do we. For example the plant pollinators or the plants themselves. The green organisms that generate oxygen. Much of the oxygen we breath, about 80%, originates from the sea. If the phytoplankton in the world's oceans die, then so do we. Such an extinction event has happened before when the oceans became anaerobic.
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