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In 1999, NASA lost a $125 million Mars orbiter because half the project staff used imperial measurements and the other half used metric.

In 1999, NASA lost a $125 million Mars orbiter because half the project staff used imperial measurements and the other half used metric.

Redheads produce more vitamin D than other hair colors, meaning they don't suffer as much from not being in the sun.

Redheads produce more vitamin D than other hair colors, meaning they don't suffer as much from not being in the sun.