Mad science or radical idea to slow climate change?
Scientists hope to repair some of the damage caused by climate change. Sky's Science correspondent Thomas Moore investigates controversial polar geo-engineering techniques — large-scale and often experimental human manipulation of the environment. SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on Twitter: https://twitter.com/skynews Like us on Facebook: https://www.facebook.com/skynews Follow us on Instagram: https://www.instagram.com/skynews Follow
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