Lesson page not loading

I don't know if you want problems reported on this group or through the "contact us" link, so forgive me if I'm posting in the wrong place. The problem is that the "Straightening Teeth" upper intermediate lesson page is not loading. I tried loading it on Safari and Firefox, and just get a blank page. Other lessons appear to load fine. Here is the link:

http://chinesepod.com/lessons/straightening-teeth