If the chemical sodium is dropped into water it will immediately and violently explode.
67
Balsa wood is classified as a hard wood!
41
Out of all the senses, smell is most closely linked to memory.
146
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
The average temperature at 40,000 feet above sea level is -60 F.
56
One barrel of petroleum holds 42 gallons.
20
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Your brain is 80% water.
525