styrofoam

Invention: Greensulate
Inventor: Eben Bayer and Gavin McIntyre
Cost: $1,500
Time: 2 years
Is It Ready Yet? 1 2 3 4 5

Eben Bayer and Gavin McIntyre want to line the walls of your home with mushrooms. The young entrepreneurs have created a strong, low-cost biomaterial that could replace the expensive, environmentally harmful Styrofoam and plastics used in wall insulation, as well as in packaging and a host of other products. Wind-turbine blades and auto-body panels aren't out of the realm of possibility, either.