Don wrote:I said I assume there was some mention of a cheap renewable energy somewhere, otherwise this wouldn't even get past the law of thermodynamics. Looking at the numbers involved this seems to be more of a party trick than anything that'd affect global warming in a significant way, and if they do have enough wind or whatever power to be able to support doing this they could just use that instead of burning the fossil fuel in the first place. I did some reading and one of the problem with carbon capture, besides being expensive and using up a lot of energy, is that suppose you did suck out all the CO2 out of thin air, where do you put it? It's just going to go back into the air if you don't got a long term solution and solutions are generally unreliable, expensive, energy intensive, or all of the above.
I remember a guy giving a lecture on global warming saying that it is a nonissue for people who can afford air conditioning. No matter how bad most parts of the world get it's not going to be worse than trying to live in say Las Vegas which is literally a desert and propped up by modern technology. So if you have a source of free energy global warming isn't a problem at all, and these carbon capture technology seems to require to have a very cheap source of free energy elsewhere, but if you had that you can easily mitigate any potential problem by just using that source of energy to replace our current ones. Okay sure gasoline has a very high energy density and is easy to store/transport, but I'm pretty sure if we invented some miracle source of renewable energy overnight, people will be able to figure out how to replace our existing stuff with it.
If the renewed CO2 is used, it prevents the usage of other CO2. That's where the difference is made.
The guy giving the lecture has less place delivering any kind of lecture on global warming than an elementary school girl. First of all, rationally stupid, Las Vegas requires a great deal of outside support from productive regions in order to function; cities like that wouldn't be able to exist; it wouldn't be like living in Vegas, but rather more like living in the Sudan - where society lacks the access to air conditioning without the support of productive outside regions. Global warming creates rising sea levels, which in turn deteriorates fresh water sources significantly - this not only creates huge problems for residential regions, but also will severely impact industry and food production. Second, global warming leads to climate change, which not only leads to severe and immediately destructive weather patterns, but also the destruction of wildlife and domestic crops alike - i.e. the coffee industry is already taking a large hit just due to slight changes over the past few decades, and it's expected to continue to degrade. If you've read Thomas Malthus, then you know what comes next; this is the Malthusian dilemma with the twist of a negative production rate on food - and also the twist of more factors coming into play: such as the deterioration of infrastructure, which will mean a decline in food transport, but also tech that people have come to depend on, like computers, refrigerators, and air conditioners.