Escalating activity along a fault line in the Sea of Marmara is moving closer to Istanbul, seismologists warn.Escalating activity along a fault line in the Sea of Marmara is moving closer to Istanbul, seismologists warn.
Escalating activity along a fault line in the Sea of Marmara is moving closer to Istanbul, seismologists warn.Escalating activity along a fault line in the Sea of Marmara is moving closer to Istanbul, seismologists warn.