William Happer: who is Trump's likely science adviser? – video report

William Happer, an eminent Princeton University professor, is tipped to become Donald Trump’s science adviser. Happer is a respected scientist in the academic community, but many are concerned about his possible appointment because of his stance on climate change. Happer argues that the role of carbon dioxide (CO2) in climate change has been largely exaggerated and argues that more CO2 is good for plant life and the planet