WHY worry? Somebody asked me this morning why I’m so concerned about climate change. I surprised them by saying I’m not worried about climate change, I’m worried about global warming. And it’s with good reason.
The year 2015 was the hottest since records began, and that makes it the hottest year, not only since records began, but since the last inter-glacial period 11,300 years ago. And some scientists say you have to go back even further, to the Paleocene Thermal Maximum, 56 million years ago, to find temperatures that equal what we are in the process of creating.
So, yes, we have had hot periods and we’ve had cold periods and, according to NASA, these changes are attributable to tiny variations in Earth’s orbit that change the amount of solar energy our planet receives. And, there’s nothing we can do about it, right?