Tonight's 20/20 Exposes Single-Payer Health Care ABC News "20/20" is planning to air a segment tonight with John Stossel about the health care systems of Canada and Great Britain. We understand our friend and colleague, Grace-Marie Turner of the Galen Institute, will be on the program. "20/20" airs tonight at 10 p.m. Eastern, but please check your local listings for the exact time. Stossel gives us this teaser on his blog: "We did find places in Canada where patients have quick and easy access to cutting edge technology like CT scans, endoscopy, thoracoscopy, laparoscopy. The clinics make these treatments available 24 hours a day, seven days a week, so patients rarely have to wait. But patients have to bark or meow to get that kind of treatment. "Do you want a CT scan? Canadian veterinary...