A species of dolphin is born naturally blind in the Indus and Ganges rivers in South Asia. These dolphins have a highly sophisticated sonar system and swim on only one side of their body.

If all the Oreo cookies ever sold were stacked on top of one another, they would be as high as 13.3 million Sears Towers.

The coliseum in Rome was used regularly for about 400 years.

AMAZING FACTS