Hospitals are supposed to help people get healthy. But new research from professors at Yale and Northeastern Universities says that carbon emissions from the U.S. healthcare system are actually making us sicker. Sophie Bushwick, Senior Editor at Popular Science, explains the connection between greenhouse gas emissions and the spread of infectious diseases. As temperatures warm, diseases are able to spread to regions where they may not have existed before. Bushwick also gives viewers a look at what weather they can expect this winter. NOAA researchers are predicting it will be a weak La Niña year. What does La Niña mean for you? If you live in the Southern United States, it will likely be a warmer and drier year than normal. For people living in the Pacific Northwest, a colder and wetter winter is in your future.