Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Most dust particles in your house come from dead skin.
48
Sound travels fifteen times faster through steel than through air.
134
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114