Although self-confidence is an excellent trait to possess, this is an uncertain world—and many of us may naturally, and understandably, seek reassurance from others. At times, this is also referred to ...

Ship propellers are a constant compromise between efficiency, vibration, cavitation, and power delivery. This video explains why adding blades can solve serious mechanical problems, and why engineers ...

Proposition 50, the Democratic-backed ballot measure to temporarily redraw the state’s congressional maps, has scrambled California’s congressional playing field in more ways than you might think. Yes ...

In 1887 one of the most important experiments in the history of physics took place. American scientists Michelson and Morley failed to measure the speed of the Earth by comparing the speed of light in ...

The F-106 was one of the best-looking US fighters of the 1960s. Its pure delta wing, curvaceous fuselage and handsome form ...

Walt Gray and Rich Ehisen explain Prop 50, California’s redistricting measure, its impact on congressional maps, and what voters need to know. Trump rants at America’s beef producers after failed ...

Add Yahoo as a preferred source to see more of our stories on Google. Prop 50, on the Nov. 4 special election ballot, allows California voters to decide whether to temporarily replace the state's ...

From the Black Sox to City College to cricket, some players and managers have looked to make an extra buck for decades. By Victor Mather Sports in the United States and around the world have been ...