Control the U.S. Debt! Neither the president nor Congress appears to be near a solution on how to control the U.S. debt. Use this <a href="http://www.learner.org/series/econusa/interactivelabs/control-the-us-debt/">interactive</a> to show them how to do it.
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.