Golden Gate Bridge Opens May 27, 1937 by Marcus McGraw Source: Wide World PhotosEven with views of the Pacific Ocean on one side and vistas of the city of San Francisco on the other, these days…
WHAT KINDS OF TASKS DO ASTRONAUTS PERFORM? HOW DO ASTRONAUTS TRAIN FOR THEIR MISSIONS? EXTRAVEHICULAR ACTIVITIESFIND OUT MOREAnyone who travels in space is called an astronaut. The Russians call…
WHAT ARE THE MAIN BODIES IN THE SOLAR SYSTEM? HOW DID THE SOLAR SYSTEM FORM? PLANETSFIND OUT MOREOur local star, the Sun, and everything that circles around it is known as the Solar System. The Sun…
HOW DOES THE SHUTTLE OPERATE? WHAT DOES THE SHUTTLE CARRY? ORBITERFIND OUT MOREThe United States created the Space Shuttle as a reusable launch vehicle to carry astronauts and cargo into space and…
WHAT ARE SPACE STATIONS USED FOR? HOW ARE SPACE STATIONS BUILT? INTERNATIONAL SPACE STATIONFIND OUT MOREIn a space station, a large crewed spacecraft orbiting Earth, astronauts can live and work in…
The Digestive SystemAnatomy and PhysiologyThe Digestive SystemStops Along the WayIt's a Long Way DownJack-of-All-TradesRunning Along the TractPancreatic Panacea?What We Do with Our Food We are…
What's in a Color?Advanced-Level Science ProjectsChemistryWhat's in a Color?Copper Magic Are all colors created equally? Is the red dye in your favorite magic marker simply made up of red chemicals…
Most people think……Christopher Columbus discovered America. In fact, the Vikings, led by Leif Ericson, were the first Europeans to land on the coast of North America in the year 1000. Christopher…
Chicago, Ill.Designed in 1914 by Zachary Taylor Davis photo by Carol M. Highsmith The American Institute of Architects and Harris Interactive selected Wrigley Field in Chicago, Ill…
