Olives, which grow on trees, were first cultivated 5,000 years ago in Syria.

The scarlet tanager, a songbird native to Illinois, can eat as many as 2,100 gypsy-moth caterpillars in one hour.

There was a post office on the Russian space station Mir. Visiting cosmonauts would use unique postal "markers" to stamp envelopes and other items as having flown aboard the Mir space station.

AMAZING FACTS