A British bus company uses sheep urine to reduce city smog. A chemical in the urine converts part of the fuel exhaust into nonpolluting nitrogen and steam.

The first movie to ever cost $100 million to make is Terminator 2: Judgment Day in 1991.

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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