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Why Fire Hydrants Don’t Freeze and Burst During Winter

The fire hydrant that we know today traces its origins back to fire plugs. Water mains that transported fresh water in a city or town used to be made of hollowed out logs buried beneath the streets. Whenever there was a fire and firefighters needed water, they dug up the cobblestone street and drilled a hole into the… » 8/12/14 5:40am 8/12/14 5:40am

Old Cigarette Butts Could Be Used To Make Supercapacitors

The world has too many nasty old cigarette butts. On the other hand, the world could use some supercapacitors, the high-tech replacements for batteries that could potentially charge in seconds. Scientists in South Korea have found a simple process to turn used cigarette filters into high-performing material that works… » 8/05/14 3:18pm 8/05/14 3:18pm