happy darwin day!! not only is today the birthday of my lovely older sister... it's the day charles darwin was born, 198 years ago! he also published "On The Origin of Species" on this day 148 years ago.
"The objective of Darwin Day Celebration is to encourage existing institutions worldwide, such as municipalities, public and private schools, colleges and universities, libraries, museums, churches, private organizations and individuals to celebrate Science and Humanity every year, on, or near, February 12."
so.... here's a video, by the eloquent carl sagan, explaining the theory of evolution (7:55)