It’s nearly spring, when a man’s fancy turns to spitting a putrid brown juice into a can or directly onto the floor of a dugout. Yes, Major League Baseball’s spring training is ab… ...

STOCK IMAGE/Getty Images Walking, of course, burns calories. But men over the age of 40 were found to burn almost two additional calories per minute when walking while chewing gum.

Figure 1. Fossilized nits of chewing lice, tightly affixed to feathers of an enantiornithine bird, entombed in mid-Cretaceous amber from northern Myanmar. (a) Isolated barbs and regularly arranged ...