Don't clear that check engine light—this $100 tool can save you a failed smog test

The “check engine” light is the most annoying orange icon in America. Half the time the car feels fine, and the other half ...
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Inside the F-16 engine test: Where one mistake can be fatal

U.S. Air Force footage takes viewers inside the deafening “hush house” facilities where F-16 engines producing over 30,000 ...