Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Balsa wood is classified as a hard wood!
41
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
One ragweed plant can release as many as one billion grains of pollen!
51
The earth is approx. 6,588,000,000,000,000,000 tons.
175