This month's free e-book from the University of Chicago press looks really interesting (to me, at least). It's
A Natural History of Time by Pascal Richet, and here's the blurb:
Quote:
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The quest to pinpoint the age of the Earth is nearly as old as humanity itself. For most of history, people trusted mythology or religion to provide the answer, even though nature abounds with clues to the past of the Earth and the stars. In A Natural History of Time, geophysicist Pascal Richet tells the fascinating story of how scientists and philosophers examined those clues and from them built a chronological scale that has made it possible to reconstruct the history of nature itself.
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It's available at
https://press.uchicago.edu/books/freeEbook.html
You have to give them your email address, and then they'll email you with the link and info on downloading the book. But my experience is that they don't abuse your email address, and I get mostly just one email a month, with the info on the free book of the month, and then maybe a very occasional additional sale announcement or something like that. Most of the UChi free books are in PDF format, which can be a bit annoying, not sure if this one is or not, since I haven't gotten it yet.