In zero gravity, a candle's flame is round and blue.
16
Aluminum used to be more valuable than gold!
84
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
Out of all the senses, smell is most closely linked to memory.
146
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16