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A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership. They can either be tagged as POTD or displayed in a special page on that site...

Behold the Hövding, a discreet airbag that, while not actually invisible, is understated and cool-looking, and which can be worn by cyclists around their necks instead of a helmet. Created by two Swedish university students, the airbag inflates around the cyclist's head in the instances of collision or a fall, protecting them from injuries. The airbag is shaped like a hood that surrounds your head...

Here’s house in Palo Alto where he lives with his wife and their three children. He bought it right after his marriage in the 90’s. Judging by the photos, there’s not any special luxury there like other celebrities or rich people may have. The house is in the British country style that doesn’t really resemble a house of a high-tech/media mogul. Steven Paul "Steve" Jobs (February 24, 1955 – October 5, 2011) was an American computer entrepreneur and innovator...

Outer space (often simply called space) is the void that exists beyond any celestial body including the Earth. It is not completely empty (i.e. a perfect vacuum), but contains a low density of particles, predominantly hydrogen plasma, as well as electromagnetic radiation, magnetic fields, and neutrinos. Theoretically, it also contains dark matter and dark energy...