The debate can be found here. Go check it out!
From Human Evolution‘s opening remarks:
First, having a realistic perception of time is a must. If you put the entire age of the earth into one hour, that is “4.6 billion years”, the first 50 minutes would be mostly made up of single celled organisms and the last ten minutes made up of animal life–humans having only been on this planet for a hundredth of a second.
And here are a couple of really good videos on dating the age of the earth:
(see also this post on age of the earth)