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 Ever since Rosie the Robot took care of "The Jetsons" in the early 1960s, the promise of robots making everyday life easier has been a bit of a tease. Enlarge This Image   Jodi Hilton for The New York Times, left; Hanna-Barbera With Ava, left, iRobot is trying to do Rosey the Robot of "The Jetsons" one better. Ava will have an iPad or Android tablet for a brain and Xbox motion sensors to help her get around. Rosie, a metallic maid with a frilly apron, "kind of set expectations that robots were the future," said Colin M. Angle, the chief executive of the iRobot Corporation. "Then, 50 years passed."

It's easy to get lost in CAVE2. The next-generation virtual reality platform is one of the most advanced visualization environments on Earth. It combines 320 degrees of panoramic, floor-to-ceiling LCD displays with an optical tracking interface that gives rise to a "hybrid reality system" capable of rendering remarkably immersive 3D environments - whether you wish to explore the labyrinthine vasculature of the human brain, or soar swiftly over the vast canyons of Mars.

As a child, I always looked up at the stars and wondered how I could make it into space. Hopefully, I will live to see that day, but for now, a homemade satellite will have to do. The Nanosatisfi team has made it their mission "to provide affordable space exploration for everyone!," and with ArduSat, they move one step closer to reality. ArduSat is a Arduino-controlled miniature 10cm cubic satellite, weighing 1 kg, which is roughly equivalent to half a store bought loaf of bread. Its size might not be impressive, but it packs over 25 sensors including: Myspectral's open source spectrometer, inertial measurement unit, magnetometer, along the standard set, and many others. This impressive little machine boasts a camera to take photographs, it could send messages back to earth, or it can run your space experiments. With the ability to upload code directly to the ArduSat while in space, the possibilities are virtually limitless.

For the first time, the international organization has set a date for the moment when the "Age of America" will end and the U.S. economy will be overtaken by that of China And it's a lot closer than you may think.