One is that atmospheric pressure is dramatically reduced at high altitudes, so a helium balloon expands as it rises and eventually explodes. If you inflate a balloon beyond its limits at room ...

Chef Grant Achatz serves up some very unusual dishes, and one of the most popular is an edible helium balloon. Customers are served the balloons and encouraged to suck in the helium before eating it.

Students could be asked to consider why the balloon is filled with helium or why decreasing atmospheric ... The Science of Space Dive (pt 3/6) - The pressure suit and space capsule.