Alexa, how can I save the planet?

On President’s day, Amazon’s CEO announced a multi-billion dollar climate pledge, that will start flooding money towards climate research. Plus, Democratic presidential hopefuls dance around a gas tax hike as part of their infrastructure plan. Kelsey Tamborrino is a Politico Energy reporter.Irene Noguchi is the executive producer of Politico's audio department. Jenny Ament is the senior producer of Politico's audio department.Carlos Prieto is a Politico podcast producer.