Australia’s national health care system first introduced its HPV vaccination program in 2007 as a cost-free three-dose course for teenage girls. In 2013, the program was expanded to school-age boys, who can carry and transmit the virus, and develop other forms of cancer. Now, the country has one of the lowest cervical cancer incidence and mortality rates in the world. In other news: radiation, antibiotics, fast food, heart health, urinary tract infections and more.