An artifact discovered in 1965 may have been a long-rumored fourth Maya codex. It may also have been a forgery. Archaeologist Gerardo Guti茅rrez and his colleagues were on the case.
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鈥淓pidemics highlight the fault lines in our society,鈥 says 精品SM在线影片 history Professor Elizabeth Fenn, a Pulitizer Prize winning writer and scholar of epidemics.
Newly published book, Biology Everywhere, is the product of 精品SM在线影片 biologist and learning scientist Melanie Peffer鈥檚 passion for good teaching and science literacy