CaliforniaBerkeley . Some scientists-Helen Michel , Frank Asaro , and
Walter and Luis Alvarez , all connected with the University of California
at Berkeley- proposed an eye-opening , compelling system for what they
termed as the ``K-T extinction (California-Berkeley . The timeline for
their study would fall at the end of the Cretaceous period , noted down
as ``K , and the Tertiary age , noted down as ``T...