There's a new hazard in the Heartland. The U.S. Geological Survey (USGS) recently released a map highlighting the future risk for man-made earthquakes, and up to eight states have an increased chance to see ground shaking. Azle, Texas, which had no recorded quakes for 150 years, felt 27 tremors from November 2013 to January 2014. The Dallas-Fort Worth Metroplex continues to feel regular earthquakes. As Science Magazine reports, earthquakes hit areas of Kansas bordering Oklahoma 192 times in the last two years; the same counties were only hit twice in the preceding 35 years. For the most part, the scientific...