The field is seeded with Kentucky bluegrass, which can be cultivated to remain soft and flat in all weather conditions. A mixture of water and glycol travels through 28 miles of subterranean plastic hoses to warm or cool the field according to sun and shade conditions. When it rains, a vacuum-powered drainage system sucks out moisture
to prevent oversaturation.
1. Kentucky bluegrass
2. Irrigation pipe
3. Root zone, 10"
4. Heating and
5. Gravel, 3"
6. Vacuum-powered drainage pipesingle page
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.