Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Iron weighs more after it rusts.
16
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
For every gallon of sea water, you get more than a quarter pound of salt.
45
Out of all the senses, smell is most closely linked to memory.
146
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89