The United States should follow Ireland's example. This study demonstrates why states need to enact a strong smoke-free law that covers all workplaces, including restaurants and bars. Every time we're exposed to secondhand smoke, we're exposed to thousands of chemicals that cause cancer, heart disease and other serious respiratory conditions.

It brings that event that's going to happen 40 years from now to right now, right here, right in front of you and that's your face on the screen.

The authors of this report explain why the previous studies have been inconsistent and really make a compelling case.