On Saturday, March 28th, 2009 at 8:30 pm local time Earth Hour arrives. But what is Earth Hour? How is it different from Earth Day? Whil...

Jim Cornish’s article on the Night Sky is a great introduction to stargazing. With a little practice, even people unfamiliar with the stars ...

“Mortal as I am, I know that I am born for a day. But when I follow at my pleasure the serried multitude of the stars in their circular cour...