Engineering Challenge:

[radonas]

USE PORTALS! i say you

[roket205]

we would really appreciate if you'd remove that idiot music so we can understand what your saying!

[tappakeggaday1]

the fastest renewable source that grows that I could see this being used on would be algae.algae could be added to the closed loop to take out the co2 ,be harvested and then fed into the system.some algae strains are 50% vegetable oil by weight.and could be used with the current system for production of fuel

[3balljuggler]

The government needs to look at this more. Seriously... this could save millions of people and resources in the long run literally.

[HermesTheMessanger]

Video Taken from a camera, 10 dollar microphone could be better

[boboco1]

9 seconds in!! Awesome triangle building! One of the greatest challenges man kind faces. To many people don't have enough faith that alternatives will work.

[kaing1212]

nice!