That looks like the basic sort of toolkit of science knowledge you should have to graduate from high school. Instead, we have half the population not knowing that the Earth takes a year to make a trip around the Sun.
Half the population doesn't know that it takes the Earth a year to go around the sun? *wonders what they think a year constitutes*
Probably the time from one Rose Bowl game to the next. Check out http://www.nsf.gov/statistics/seind06/c7/c7h.htm , particularly the tables, if you want a hint as to how bad the situation really is.