With a top speed of about 37 miles per hour, the greyhound is generally believed to be the fastest dog. Some claim the saluki is faster, since that breed was once used to hunt gazelles, which can run over 40 miles her hour.

Two years before his starring role in the TV series “Star Trek,” William Shatner appeared on a 1964 episode of the sci-fi series “The Outer Limits.” In an eerie hint of things to come, he portrayed an astronaut on a mission that was called Project:

A) Enterprise

B) Kirk

C) Star Trek

D) Vulcan

Monday’s answer: The world’s oldest known disease, discovered by scientists to have afflicted dinosaurs, is arthritis.