Penn State's EESI includes the Center for Penn State Ice and Climate Research [3], the National Institute for Climatic Change Research [4], and several other centers relevant to climate change.
Sierra is perhaps the largest and most politically active of U.S. membership-based environmental groups. Their long-established climate change program is focused on grass-roots organizing and policy advocacy. Wikipedia [10]. Press Contact [11].
The Pew Center on Global Climate Change is supported by the Pew Charitable Trusts, which is ultimately based on the family fortunes of the descendants of the founder of the Sun Oil Co. The Pew climate program is a centrist, non-profit advocacy organization "working to create a policy environment that leads to the adoption of mandatory federal limits on emissions that contribute to global warming." Pew works intensely with Fortune 500 companies.
Links
[1] https://www.sej.org/initiatives/researchacademic-institutions/earth-and-environmental-systems-institute-penn-state-unive
[2] http://www.eesi.psu.edu/
[3] http://www.eesi.psu.edu/centers/psice.php
[4] http://www.eesi.psu.edu/centers/NICCR.php
[5] https://www.sej.org/category/topics-beat/climate-change
[6] https://www.sej.org/taxonomy/term/81
[7] https://www.sej.org/category/region/national/northeast
[8] https://www.sej.org/initiatives/environmental-groups/sierra-club
[9] http://www.sierraclub.org/globalwarming/
[10] http://en.wikipedia.org/wiki/Sierra_club
[11] http://www.sierraclub.org/pressroom/contact/
[12] https://www.sej.org/category/region/national
[13] https://www.sej.org/initiatives/environmental-groups/pew-center
[14] http://www.pewclimate.org/
[15] https://www.sej.org/initiatives/list/%2A/47
[16] https://www.sej.org/initiatives/list/%2A/47?page=35
[17] https://www.sej.org/initiatives/list/%2A/47?page=32
[18] https://www.sej.org/initiatives/list/%2A/47?page=33
[19] https://www.sej.org/initiatives/list/%2A/47?page=34
[20] https://www.sej.org/initiatives/list/%2A/47?page=37
[21] https://www.sej.org/initiatives/list/%2A/47?page=38
[22] https://www.sej.org/initiatives/list/%2A/47?page=39
[23] https://www.sej.org/initiatives/list/%2A/47?page=40