kohlrak: That's a whole issue, too: if it's too late, what's the point? But i understand the reality of that argument: what if we were wrong about it being too late or what about at least not making it as bad kind of thing. But i go back to what i said earlier: if we're basically screwed in some ways, why aren't we at least trying to work out more guaranteed method to solve the problem? If we're having trouble keeping species alive in captivity (which would presumably be an ideal solution for preservation of animal species), why aren't we trying to solve that issue? If the land is going to be swallowed by water, why aren't we working on technology to build big boats that we can live on for thousands of years without fear of rust? Why aren't we working on trying to figure out how to maintain artificial habitats? Human beings have survived for as long as we have by adapting to nature, not trying to get nature to adapt to us. Now that we, theoretically, have become the force of nature that threatens ourselves, why are we expecting to change that course? A new problem should mean a new solution, not sitting around pointing fingers and saying "we're screwed, and you're making it worse!" We aren't going to reverse the damage or compensate for the damage by trying to extend the length of the fuse: all we're doing is putting off a proposed inevitable.
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toxicTom: Save for global nuclear war (which is frighteningly becoming a possibility again with the "good west" cornering Russia more and more, and China becoming more powerful with every year which will end up with them stepping on the toes of the "old powers") mankind in itself will survive, of course. The question is, how bad do we want the challenges of the future to be? There are regions in China where the climate has been nearly intolerable this year - too hot and humid so that sweating can't cool enough (see heat exhaustion:
https://www.nytimes.com/interactive/2018/10/11/opinion/heat-humidity-killer-combination.html).
The problem is: 200 million people live in this region - they might become refugees one day.
Rising sea levels is the least of our problems - climate changes will become utterly unpredictable in many regions, for instance if the Gulf Stream stops, northern Europe might experience an ice age, although global average temperatures rise.
One things that will happen, and will be worse if we don't stop destroying this planet, is a huge migration period which will probably cost many lives as is, but it's in our hand to decide how badly fucked we're all are.
I think right now there are two things we - as individuals - can do:
1. Do what's possible to reduce protect the environment both in our daily life (ie. don't use the car if the bicycle could do it - also good for your health) and vote with your wallet (go for green energy etc.).
2. Learn to be nice to each other - this planet will get a whole more crowded, we all need to learn to get along.
Right, and there's a few ways of going about this overall: we could work on technologies to combat the problems we're predicting or we can simply expect them to happen and just hope that we're done making it worse, but make no progress otherwise. If this is going on, we should be doing something about it, especially if we might actually be wrong about how much human influence there is. The planet itself is not alive, so we're not killing it: we're actively developing it. I understand pollution is an issue, but CO2 isn't the only thing on the table, but is most certainly the least of our problems compared to other pollution, which some "green energy" companies are providing (wind turbines seem to be up there with water poisoning, bird killing, and ecological issues due to the noise they produce).