answer:Well, we really are all doomed. Even if we learn to live forever, it leaves us in a Universe facing heat death from entropy. Here’s some good data about the accuracy of current climate models when applied to previous climate cycels between peak temperatures and ice ages. Only models that are accurate at predicting what we already know happened in the past (a process of verification called hindcasting) are used to predict the future of climate variations, so we have every reason to expect these models to be correct. Searching for serious science that claims that we should worry more about an ice age than runaway global warming, the first reference I found is this from Doug L. Hoffman. Only problem is, he’s not a climatologist. He’s not a scientist of any sort. He’s a business tycoon and unsuccessful congressional candidate running under the Conservative Party banner. Also, the article he cites in the peer reviewed Journal, Science is available only to subscribers for $310 per year unless you are student, post doctoral candidate, or professional member, in which case it’s still $99 for the digital version only. So who knows what that article really says? Aside from obvious denier sites I find nothing indicating that what the IPCC and climatologists are telling us their models warn of is actually backwards, and we should all be stocking up on space heaters. What makes this cycle different from past CO2/temperature cycles is that never before in Earth’s history were humans adding to the atmosphere 35 billion metric tons of CO2 and ramping up each year. Even with massive shifts in ocean currents, which are a good bet, that does noting to mitigate the continually increasing greenhouse effect of human activity.