the one in which i tenuously use earth day as a reason to give away books

So, it's Earth Day. Woop-dee-dooh. In times as perilous as these, even a boring government report from the Project on Climate Science* is sounding the alarm:

The report, a draft of the Fifth U.S. Climate Action Report that will be sent to the United Nations, says bluntly: "Global warming is unequivocal and primarily human-induced … Global temperature has increased over the past 50 years. This observed increase is due primarily to human-induced emissions of heat-trapping gases."

Anyhow, one day ...