478 ppm

Climate Change: Plants Choke on too Much Carbon By Brian Stallard Jun 15, 2015 03:12 AM EDT CO2 is plant food Earth’s current atmospheric CO2 concentration is almost 390 parts per million (ppm).  Adding another 300 ppm of CO2 to the air has been shown by literally thousands of experiments to greatly increase the growth […]

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adult human biomass

Research article The weight of nations: an estimation of adult human biomass Sarah Catherine Walpole1*, David Prieto-Merino2, Phil Edwards2, John Cleland2, Gretchen Stevens3 and Ian Roberts2 *Corresponding author: Sarah C Walpole argotomunky@yahoo.co.uk Author Affiliations 1Foundation Year 2 doctor, North Yorkshire and East Coast deanery, 4 Hilton Place, Leeds, LS8 4HE, UK 2Faculty of Epidemiology and […]

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