John Kerry: relying on technology to remove carbon dioxide is 'dangerous'

Exclusive: US climate envoy says existing measures, such as shift to renewable energy, must be deployed faster to stop global warmingRelying on technology to remove carbon dioxide from the atmosphere is "dangerous" and a cause for "alarm", John Kerry has warned.The US special presidential envoy for climate said in an interview that new technologies may not prevent the world from passing "tipping points", key temperature thresholds that, once passed, could trigger a cascade of unstoppable physical effects. Continue reading...