An unimaginably big "megastorm" could hit the Bay Area and California as hard or harder than an earthquake, a researcher with the United States Geological Survey (USGS) warned Thursday in Menlo Park. Dale A. Cox heads an interdisciplinary scientific team investigating anything on Earth that can go wrong -- sometimes very wrong. Speaking at noon to USGS colleagues and staff and to the public Thursday evening, Cox outlined the possibilities and impacts of what he calls an ARkStorm. The term is a play on "Noah's Ark" based on the initials AR. Those stand for a relatively new meteorological term: an...