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Category Archives: History
Here’s the Beef, Or the World Economy Explained by a Billion Cows
Grasses coevolved with ungulates (we can call them cows). About 30 million years ago due to declining temperature, humidity, and atmospheric Carbon dioxide a bunch of plants including grasses evolved a more efficient form of photosynthesis called C4. This allowed them … Continue reading
Posted in Anthropology, Climate, Climate Change, Economics, Geography, History, History of Life, Paleoclimate, Salvation from Cows
Tagged Africa, Cattle, Sahara
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Study in Science Magazine Shows Strongest El Ninos in 7000 Years Were During Little Ice Age
Kim Cobb and others published January 3 in Science Magazine a paper exploring 18Oxygen in coral cores as old as 7000 years. Living coral was not drilled. While showing some increase in amplitude since 1970, the strongest El Ninos in … Continue reading
Posted in Climate, Climate Change, History, Paleoclimate
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What is it with squares in nature anyway?
Actually, perfect squares are extremely rare in nature. Squares are human constructs. We imagine Pythagoras and the Greek philosophers drawing their squares in the sand, dividing the sides equally, connecting the divisions, and counting the resulting smaller squares to develop … Continue reading
Posted in Anthropology, History, What's going on here?
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Spreadsheet of Human History
Spreadsheet of human history Spreadsheets are really graphs. This one has time on one axis and space on the other. The space geography is arbitrary but intended to sequence human dispersion from Africa. I have lots of Teaching Company timelines … Continue reading
Posted in Anthropology, Climate, Geography, History, History of Life, Religion
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