Hear from deep space. Pupils learn how satellites transfer information back to Earth. They learn about three different ways to modulate radio waves and how a satellite sends information with only 0s and 1s. Using sound, class members...

Maria Augusta Trapp explains the origin of the time of feasting and revelry between Epiphany and Ash Wednesday, the seasonal celebration of Mardi Gras, which marks the beginning of Lent. Article also touches on the related tradition of...