Where'd My Pipeline Go?

Dr. John Robson comments on key items from the latest Climate Discussion Nexus weekly "Wednesday Wakeup" newsletter (https://climatediscussionnexus.com/ne...), including the collapse of the Keystone XL pipeline, negative feedback loops and a pivotal new study of 250 years of air pollution that's causing the models to choke. To support the Climate Discussion Nexus, subscribe to our YouTube channel (http://www.youtube.com/channel/UC_egd...) and our newsletter (at http://www.climatediscussionnexus.com/), like us on Facebook (http://www.facebook.com/ClimateDN/), follow us on Twitter (http://www.twitter.com/ClimateDN), and make a monthly or one-time pledge at http://www.climatediscussionnexus.com...