Modern Marvels
Bathroom Tech II
TV-PG
S15 • E20 Jun 30, 2008 44m7.4
Humans flush it, cows dump it, and two million ton machines scoop it from the ground. Without it one third of us would starve. Modern Marvels: Fertilizer tours the places that harness the vital nutrients that enrich the soil...that grow the crops...that feed us.
