Be on the lookout for an odd-looking invasive worm that appears to be infesting the D.C. area. The genus of worm is called Bipalium, but they’re better known as “hammerhead worms” because of the ...

Birds do it. Bees do it. Even hibernating bears do it. They self-medicate, and they do it better than us. Bears, for instance, eat willow bark after their long winter snooze. Rich in salicin, the bark ...