Scientific evidence that climate change is happening and is largely caused by human activities, especially fossil fuel burning, is clear. So why does it sometimes seem like there is a rising tide of denialism?
Katharine Hayhoe is a climate scientist and an evangelical Christian who lives in Texas and knows how to reach out to conservatives who might see climate change as a party political rather than a science-based issue.
Two years after she last spoke to Radio Davos, Prof Hayhoe assesses the rise of climate denialism, particularly on social media, but also the rising awareness of the issue caused by increasingly frequent extreme weather events around the world.
