Menacing Harvey knocking on Texas coast as Category 4 storm

CORPUS CHRISTI, Texas — With time running out, tens of thousands of people fled Friday from the path of an increasingly menacing-looking Hurricane Harvey as it took aim at a wide swath of the Texas Gulf Coast that includes oil refineries, chemical plants and dangerously flood-prone Houston, the nation's fourth-largest city.Texas Gov. Greg Abbott warned that the monster system would be "a very major disaster," and the forecasts drew fearful comparisons to Hurricane Katrina, one of the deadl