Walter Alvarez

Walter Alvarez (born October 3, 1940) is a professor in the Earth and Planetary Science department at the University of California, Berkeley. He is most widely known for the theory that dinosaurs were killed by an asteroid impact, developed in collaboration with his father, Nobel Prize winning physicist Luis Alvarez.

Read more about Walter Alvarez:  Biography, Impact Theory, Big History, ChronoZoom, Awards and Honors, Further Reading

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    Be advised what thou dost discourse of, and what thou maintainest whether touching religion, state, or vanity; for if thou err in the first, thou shalt be accounted profane; if in the second, dangerous; if in the third, indiscreet and foolish.
    —Sir Walter Raleigh (1552–1618)

    No one is promiscuous in his way of dying. A man who has decided to hang himself will never jump in front of a train.
    —A. Alvarez (b. 1929)