Mathway.com solves all kinds of math homework problems with step by step explanations.
15
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Scientist Niels Bohr was “given a house next door to the Carlsberg brewing company, and had a pipeline running from the brewery into the house so that he could have a never-ending supply of fresh beer on tap”.
28
After coming across a "very sweet" homeless man from Jamaica named Michael on a night out, Londoner Jenny Baker took to Twitter, and within hours, using the hashtag #getmichaelhome, had raised thousands of pounds so that he could return home to Jamaica where he said he would be "happy again".
19
In 1989, a British company made a laptop with a graphical user interface, a 60 hour battery life, SSD storage, and a touchpad.
12
There is a superhero supply store in Brooklyn with a cape fitting room that has a wind tunnel. They also sell oxygen gum, bottled chaos and have an invisibility testing center.
18