I'm doing a lot of research getting ready to preach on science and faith this Sunday at Bethany Place. I came across a post on Justin Taylor's blog regarding the age of the earth. The post consists of three videos with some explanation. At the beginning of the 2nd video, John Lennox, a British math professor relates hearing C.S. Lewis lecture in person. It's a great story. Once you open the page, scroll down to the 2nd video.
How Old is the Universe from Justin Taylor's blog on the Gospel Coalition site.