Glen MacDonald, John Muir Memorial Chair of Geography, joins ABC News Live to discuss concerns about climate change as countries around the world battle scorching temperatures and wildfires. WATCH the ABC News Live Stream Here: https://www.youtube.com/watch?v=w_Ma8oQLmSM SUBSCRIBE to ABC NEWS: https://bit.ly/2vZb6yP Watch More on http://abcnews.go.com/ LIKE ABC News on FACEBOOK …
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