 However he has disputed large scale climatological studies where he claims that researchers fail to incorporate sufficient data involving increased solar activity, water vapor as a greenhouse gas, data contamination through expansion of the urban heat island effect surrounding data collection points, and many other key variables in addition to the human chemical emissions that are the sole focus of many climatological studies.In October 2009, Dr. Legates and 34 cosigners submitted a letter to the EPA outlining specific objections to the proposed endangerment rule.Legates is a signatory of the Cornwall Alliance for the Stewardship of Creation's "An Evangelical Declaration on Global Warming".