November 20, 2012 6:55 pm “What's Up With the Weather?” Part 3: The Battle Over Climate Change Climate researchers say the earth is heating up and human produced carbon dioxide is mainly to blame. NBC10’s meteorologist Glenn “Hurricane” Schwartz explains. US & World Videos 2:36 Gloomy weather sticks around for Sunday's Broad Street Run 2:44 Cloudy, chance for rain this weekend 2:41 The weekend kicks off with mostly cloudy skies and passing showers 2:31 Back to cooler temperatures 2:36 Back to spring temperatures