Detecting very small earthquakes is notoriously difficult. The churning of the ocean, a passing car or even the wind can feel a lot like a minor quake to the sensors that blanket seismically active parts of the U.S. That's a problem for scientists who rely on data about all the earthquakes in a region to study what triggers the biggest, most destructive ones. Now, a team of scientists says it has found a way to accurately detect tiny earthquakes, and it has published a new, more comprehensive list of quakes that occurred over a recent 10-year period in Southern California....