Guinness Records have declared that Smokey the cat has the loudest purr of a domestic cat. Approaching the loudness of a lawn mower, the feline's constant purr has been measured at 67.7 decibels. More, including video, here.
In the first half of Friday's show, guest host Jimmy Church (email) welcomed theoretical archaeo-astronomer Walter Cruttenden, who discussed the recent scientific discoveries of a possible new planet as well as "gravity waves." In the second half, Jimmy welcomed Open Lines callers.