When it’s coughed up, though, do you spit it out? Do you try to cough it up just so you can spit it out? According to a health expert, you may want to think twice before making that move.

The sprays of water turned out to be how thick-shelled river mussels give their parasitic young a chance to find a host. In spring, mature females migrate to the river’s edge where it’s shallow enough ...