Length: 29:39
Description: Celebrate Earth Day by taking an up-close look at these environmentally-friendly innovations!
Chapters:
00:00 Glass Bottles (S4E14A) (2007)
04:59 Fiber Optics (S1E8B) (2005)
09:45 Car Recycling (S5E17D) (2008)
14:45 Solar Panels (S1E17B) (2005)
19:35 Hydroponic Lettuce (S1E24A) (2005)
24:19 Cellulose Insulation (S4E9B) (2006)
