Cats also have excellent hearing and a powerful sense of smell.

In ancient Rome, lead poisoning was a prevalent disease amongst the wealthy because of their extensive use of lead. Many Roman women died because of lead poisoning caused by the use of make-up that contained lead.

The most valuable painting made by a female artist is "In the Box," painted by Mary Cassatt. It was sold for $3.67 million at Christies in New York City.

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