The Zeal Transcend GPS Goggles are some seriously futuristic ski goggles, featuring GPS as well as a micro LCD display right inside the googles themselves. This allows you to see real-time GPS data as well as speed, altitude, distance traveled, the temperature and other information on a screen that appears to hang about six feet in front of you.

Just as car GPS units have allowed drivers to explore the unknown without fear of becoming lost, this 3D braille GPS is designed to help the visually impaired break out of their routine, by finding new places to visit.

We've long known about Arthur C. Clarke's prediction way back in 1945 that artificial satellites placed in a geostationary orbit could be used to relay radio signals around the world — but we had no idea that 11 years later, he revisited his famous essay "Extra-Terrestrial Relays — Can Rocket Stations Give Worldwide Radio Coverage?" to predict the GPS… and more.

Twitter is one of the easiest ways to tell everyone you know what you're doing, so it was only a matter of time before the program began to tell the world where you are as well. But is that a good thing?