Squirrels of the world, I apologize. Till now, I thought of you as only cute but pesky little creatures that scampered mindlessly through the woods. But now that I’ve spent time crawling around on all ...

Next time you’re out and about, look down at your feet. Oak trees in Chicagoland and nationwide dropped an unusually high number of acorns this year, in what botanists call a “mast year.” “This is one ...