Geologists have discovered that two deadly faults beneath San Francisco — the Hayward and Rodgers Creek faults — may be linked. Should one slip, it could trigger the other fault to collapse as well, causing an earthquake even larger than the one that struck back in 1989.
Thanks to our asphalt-giddy behaviour, we’ve all but paved over the fault lines that zigzag through some of our riskiest seismic zones. A new video shows how a team of geologists and engineers in Los Angeles have been digging a hole to find the exact location of a fault which…