Originally published on Wed October 22, 2014 6:28 pm
The protractor and the Bunsen burner. Playing the recorder in music class. Drawing arcs and circles with a compass in geometry. These tools of the education trade become part of our lives for a semester or two and then we move on.
Today, NPR Ed begins a new series examining these icons of the classroom. We start off with a device that once was essential to higher-level math, in school and in the workplace, but now has all but disappeared:
Originally published on Wed October 22, 2014 8:24 pm
Scientists announced Tuesday they've solved the mystery of the Mongolian ostrich dinosaur.
The mystery began in 1965, when fossil hunters found a pair of 6-foot-long, heavily clawed arm bones in Mongolia's Gobi desert. Nobody had seen anything like them before. Now, scientists say, they've got the rest of the beast ... and dinosaur textbooks may need to be rewritten.