The day after Thanksgiving is the busiest day for plumbers in the US.

Keeping your car tuned up is a good way to save on gas. A car that is tuned up is 9% more efficient on gas.

It takes the Hubble telescope about 97 minutes to complete an orbit of the Earth. On average, the Hubble uses the equivilent amount of energy as 30 household light bulbs to complete an orbit.

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