The World Health Organization announced that they have established a new limit for indoor radon gas levels. The previously accepted "action level" was 4.0. The new maximum radon level is 2.7. Based on this new threshold, millions of U.S. homes will require repairs to reduce the levels of the gas. Each year, approximately 20,000 Americans die from exposure to radon (more than any other in-home risk including fires, carbon monoxide, falls, drowning, poisonings, handguns, etc.) This new plan of action by the World Health Organization will save thousands of lives each year in the U.S. and potentially millions of lives worldwide.