Out of all the senses, smell is most closely linked to memory.
146
Nylon is made from coal and petroleum.
42
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
For every gallon of sea water, you get more than a quarter pound of salt.
45
One barrel of petroleum holds 42 gallons.
20
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Billions of neutrinos pass unnoticed through your body every second.
6