Up next, we'll be focusing on you and your true love - your smartphone. Think about it. Are you lost without it? Inconsolable if the two of you are separated? Willing to walk into a lamppost rather than look up while texting? Is it the object of your desire? Isn't it?
Saul Perlmutter shared the 2011 Nobel Prize in physics for his discovery that the universe was expanding at an accelerating rate. Perlmutter explains how supernovae and other astronomical artifacts are used to measure the expansion rate, and explains what physicists are learning about "dark energy" — the mysterious entity thought to be driving the acceleration.
Springtime in Appalachia means ramp festival season. But even as ramp festivals attract record numbers of people seeking a fleeting taste of the seasonal garlic-scented greens, scientists warn that overharvesting is forcing wild populations into decline.