Higher education is depressing...

Well, there's good news about global warming. Probably, our little addition to the atmospheric soup is not helping, but it is not the primary cause. We are in an interglacial period, because the earth is tilted at 23 1/2 degrees at the moment (it fluctuates from 22 to 24 1/2 as a matter of course), thus the poles are more exposed to sunlight. And, I heard that contrails, those streaky clouds that airliners leave behind, actually cool the earth with their shadows. So all this hoohaw is interesting, but not all that devastating. Earth will abide. It's life on earth that is threatened here, as it has been through many millenia. And we should all just get over it. Right.