A new investigation exposes how one of the top scientists involved in denying climate change has failed to disclose his extensive funding from the fossil fuel industry. Dr. Wei-Hock Soon of the Harvard-Smithsonian Center for Astrophysics has downplayed global warming and rejected human activity as its cause, arguing the sun is more responsible than greenhouse gases from pollution. Climate denialists — including Republican Senator James Inhofe, chair of the Senate Environment and Public Works Committee — frequently cite Soon’s work to reject concrete action. But documents obtained by the Climate Investigations Center show Soon received more than $1.2 million from fossil fuel corporations and conservative groups over the last decade and failed to disclose those ties in most of his scientific papers. Funders include ExxonMobil, the American Petroleum Institute, coal utility Southern Company and the Charles G. Koch Foundation.