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. Climate denialists frequently cite his work to reject concrete action. But documents released by Greenpeace show Soon has received more than $1.2 million from fossil fuel corporations over the last decade and failed to disclose those ties in most of his scientific papers. According to The New York Times, Soon’s hidden financial ties likely violate ethical guidelines in at least eight different cases. In correspondence with his funders, Soon referred to his scientific papers or congressional testimony as “deliverables.” In response, the Harvard-Smithsonian Center says Soon’s behavior is “inappropriate” and will be handled internally.