The Secret Global Sewer System

To learn more about this topic, start your googling with these keywords: Waterlog - to saturate (a field) with water; a problem for most crops Drainage - the removal of liquid (water) from an area Ditch - a narrow channel dug in the ground, typically used for drainage alongside a road or the edge of a field Drain tile - a pipe buried (beneath a field) for drainage. Originally made of ceramic tiles, now typically of corrugated plastic Precision agriculture - putting corn seed + small dose of fertilizer/pesticides in hole in ground Controlled drainage - the use of a water control structure to raise the depth of a drain tile outlet to hold water in the field when drainage isn't needed Wood chip bioreactor - an underground trench filled with wood chips that provide carbon for bacteria that denitrify the water flowing through it Saturated buffer - a strip on the edge of a field filled with plants & bacteria that can remove some nitrogen from the water flowing onto it from drain tiles Denitrification - the removal of nitrogen from a substance (soil, air, or water) by chemical reduction, typically via bacteria Wetland - an area of land where water covers the soil year-round or at certain times of year Ecosystem services - the free benefits humans get from natural ecosystems MinuteEarth is produced by Neptune Studios LLC ⁠https://neptunestudios.info⁠ If you like what we do, you can help us! - Become our patron: ⁠https://patreon.com/MinuteEarth⁠   - Buy our merch: ⁠http://dftba.com/minuteearth⁠   - Buy our book: ⁠https://minuteearth.com/books⁠ - Sign up to our newsletter: ⁠http://news.minuteearth.com⁠   - Share with your friends and family - Leave us a comment (we read them!) Learn more about your ad choices. Visit megaphone.fm/adchoices