
Giraffe tongues can be 20 inches long. Their dark bluish black color is probably to prevent sunburn.

It is possible to go blind from smoking too heavily.

Polar bears have black skin. And actually, their fur isn’t white—it’s see-through, so it appears white as it reflects light.

Koalas mostly eat eucalyptus leaves, which don't provide much in the way of nutrition or calories. As a result, koalas sleep up to 20 hours a day.

Viking burials included board games.

Women have a slightly higher average IQ than men.
The first product to have a barcode was a pack of Wrigley's chewing gum.

The fear of poetry is called metrophobia.

Albert Einstein was offered the presidency of Israel in 1952, but he declined.

Ravens can mimic human speech.
The wedding of Princess Diana and Prince Charles was watched by 750 million people worldwide in 1981; sadly, 2.5 billion watched her funeral in 1997.

Pigeons use roads and highways to navigate as they fly. Sometimes they even change direction at intersections.