A summit on climate change was recently cancelled by the Center for Disease Control and Prevention. But former US Vice President Al Gore decided to hold his own national meeting, reflecting a determination to address issues he and many others see as crucial. Al Jazeera’s Andy Gallacher reports from Atlanta. - Subscribe to our channel: aje.io/AJSubscribe - Follow us on Twitter: twitter.com/AJEnglish - Find us on Facebook: www.facebook.com/aljazeera - Check our website: www.aljazeera.com/