Botanist Sarah Darwin, great great granddaughter of the botanist Charles Darwin, sits by his statue which was unveiled by Britain's Prince Philip  at Christ's College, in Cambridge Thursday Feb. 12, 2009  to mark the 200th anniversary of the scientist's birth. AP Photo logo AP Photo 36 months ago

Botanist Sarah Darwin, great great granddaughter of the botanist Charles Darwin, sits by his statue which was unveiled by Britain's Prince Philip at Christ's College, in Cambridge Thursday Feb. 12, 2009 to mark the 200th anniversary of the scientist's birth.