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.

SHOW CLOCK

00:00 Opening Credits

00:21 Introduction

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

CREDITS

Special thanks to Amy Coombs and Audra Wolfe for researching this show. Additional credits available at chemheritage.org/distillations.