UMBC History Professor Sandra Herbert helped kick-off Charles Darwin's bicentennial celebration on his 200th birthday, Feb. 12, 2009, with a speech at the Library of Congress.

Herbert, one of the world's leading Darwin authorities, gave a lecture on her book “Charles Darwin, Geologist,” which explores how geology changed Darwin and how Darwin changed science.

An excerpt of Herbert's speech can be viewed below. The full lecture will be featured on CSPAN's Book TV in April. Learn more about Herbert's Darwin research here.