The probability of a large and damaging earthquake in the San Francisco Bay Area in the next 30 years is 70 percent, and that has an uncertainty of plus or minus 10 percent.  -   David Schwartz     Quotes
The probability of a large and damaging earthquake in the San Francisco Bay Area in the next 30 years is 70 percent, and that has an uncertainty of plus or minus 10 percent. David Schwartz