Bill Nye the Science Guy and Dr. Oz continue on their medical myth-busting mission. This time, they'll find out if nitrogen clouds can be toxic to your health.

Click here to watch Part 1 and see Dr. Oz and Bill Nye bust more medical myths.

Want to know how to look marvelous without splurging so much? Dr. Oz invites three beauty experts to share the smartest ways to save money while looking fabulous starting from your hair and makeup tools to the beauty products you use.