Trust In Science, California Power Outages, Regrowing Cartilage. Oct 11, 2019, Part 1 Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email A spray painting by street artist Banksy on a wall by Regent's canal in Camden, London. It was done in response to the 2009 United Nations Climate Change Conference in Copenhagen, Denmark. ( Dunk/flickr ) Hosted by Ira Flatow Produced by Science Friday and WNYC Studios