Energy Lab In this lab from The Habitable Planet, your challenge is to try to meet the world's projected energy demand by choosing from the available energy sources while keeping atmospheric CO2 under control and avoiding the particular limits and pitfalls associated with each energy source. Launch lab.
Which Famous Cathedral Collapsed?
Four of the grandest medieval cathedrals are shown -
one of which was not structurally sound and collapsed.
After looking at the photos try to select which cathedral
fell and see if you can determine, from the picture, why
it might have happened.
