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Amazing Machines - Tremendous Tractors
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| Added by: bl007 | Karma: 5748.45 | Kids | 3 January 2014 |
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Fun animal farmers show readers how their crops are planted and harvested using tractors, trailers, plows, and other farm machines. |
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| Tags: machines, other, plows, Amazing, Machines |
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Plows, Plagues, and Petroleum: How Humans Took Control of Climate
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| Added by: raziel_401 | Karma: 18.04 | Non-Fiction » Science literature | 27 June 2010 |
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 Plows, Plagues, and Petroleum: How Humans Took Control of Climate
"Is excellent reading for scientist and non-scientist alike". -- James White, Science
"The author details how humans helped the Earth avert a new ice age." -- The Futurist
Bill Ruddiman's provocative suggestion of early human influence on the atmosphere will draw fire. But I stand with Ruddiman: the simultaneous upward departures of CO2 and CH4 from climate indicators, unique in 420,000 years, is probably an early footprint of humankind. |
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| Tags: Praise, editions, previous, Princeton, Ruddiman, scientist, Plows, early, Climate |
