Why sunspots won’t help you make a fortune on wheat futures

American Geophysical Union, August 2013

A claim by 1800s astronomer William Herschel, retold for 212 years by science authors and trivia lovers, says the Sun’s moods influence things here on Earth in a more immediate way. Herschel asserted that the number of dark splotches on the Sun, called sunspots, significantly affects the wholesale price of wheat grain.