All over the Midwest, farmers are cranking up their combines for the corn harvest. Modern agriculture depends on science and technology at every step of the way, from genetically modified crops, to the fertilizer on the fields, to the fuel in the tractor.
00:00 Opening Credits
01:21 Element of the Week: Nitrogen
03:27 Feature: Biodiesel and glycerine
08:06 Mystery Solved! Compost
10:43 Quote: Walt Whitman
11:16 Closing Credits
Special thanks to Amy Coombs and Audra Wolfe for researching this show. Additional credits available at chemheritage.org/distillations.
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