Balsa wood is classified as a hard wood!
41
Out of all the senses, smell is most closely linked to memory.
146
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
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
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310