Have you ever seenan echo? Maybe if you're a bat, which can form a mental picture of its environment using echolocation. Well, then, allow me to introduce you to the star RS Puppis in the constellation Puppis the Ship's Stern. Unlike the steady sun, RS Pup pulsates like a beating heart, becoming brighter and fainter by a factor of five about every 40 days. Instabilities in the star's core bro...
December 18, 2013 - 1:02pm
Have you every wondered why black beans have become so popular in the United States in recent years? They've long been a staple in our south-of-the-border neighbor, Mexico, where they're called frijoles negros.
Now, Americans have discovered that black beans not only are uniquely delicious but nutritious as well.
Few foods have as solid a nutritional profile as black beans. They are loaded wi...
February 08, 2013 - 2:31pm