There is little doubt among archaeologists that the Younger Dryas, a cold snap following the initial retreat of Ice Age conditions some 11,000 years ago, had a major impact on human history. It seems that humans are highly motivated to return the impact to the Younger Dryas. Two times in recent years, evidence of an … Continue reading The latest newly discovered meteor impact that did not cause the Younger Dryas
You’ve probably already heard about his paper because everyone is all a tizzy about it. There is a fundamental complaint being made about one of the paper’s conclusions. I’ve been paying careful attention to what my colleagues are saying about that one aspect of the paper, and I get their point but I’m not sure … Continue reading New Paleoclimate Paper: Longest detailed reconstruction plus possible bad news
A new paper just published in Nature has made a bit of a stir because it has been interpreted as suggesting that global warming has the benefit of avoidance of an Ice Age that was just about to happen. However, the paper does not actually say that, and we already knew that we may have … Continue reading Yes, we are avoiding an Ice Age, but this has been obvious for years
This is the sixth in a series of reposts from gregladen.com on global warming. In the last post in this series I talked about two aspects of large scale climate change: Milankovitch orbital geometry and the cycles of glaciation this effect causes, and the role of plate tectonics and related changes in altering sea and … Continue reading Global Warming, the Blog Epic ~ 06 ~ A Glacial Cycle
This is the fifth in a series of reposts from gregladen.com on global warming. During the 1970s and 80s, creationists had a long list of reasons to doubt evolution, and every one of those reasons was wrong. But they had so many reasons, and it was so hard to keep track of them all, each … Continue reading Global Warming, the Blog Epic ~ 05 ~ Causes of Large Scale Change
One of the most interesting and exciting stories in science is that of the Younger Dryas. The Younger Dryas was a climate event that had important effects on human history, and that has been reasonably linked to some of our most important cultural changes, and ultimately some evolutionary changes as well. That is one reason … Continue reading The Fantastic Mystery of the Younger Dryas
This is the sixth in a series of reposts from gregladen.com on global warming. In the last post in this series I talked about two aspects of large scale climate change: Milankovitch orbital geometry and the cycles of glaciation this effect causes, and the role of plate tectonics and related changes in altering sea and … Continue reading Global Warming, the Blog Epic ~ 06 ~ A Glacial Cycle
This is the fifth in a series of reposts from gregladen.com on global warming. During the 1970s and 80s, creationists had a long list of reasons to doubt evolution, and every one of those reasons was wrong. But they had so many reasons, and it was so hard to keep track of them all, each … Continue reading Global Warming, the Blog Epic ~ 05 ~ Causes of Large Scale Change