How much snow is shoveled or plowed in the U.S. in a typical winter?
How much food is wasted at school cafeterias every year in the U.S.?
Look for the answers online at tpt.aapt.org under “Browse,” at the very end of the current issue.
Question suggestions are always welcome!
For more Fermi questions and answers, see Guesstimation 2.0: Solving Today’s Problems on the Back of a Napkin, by Lawrence Weinstein (Princeton University Press, 2012).