US National Council for Science and the Environment
"The US National Council for Science and the Environment (NCSE) has been working since 1990 to improve the scientific basis for environmental decisionmaking. NCSE is supported by nearly 500 academic, scientific, environmental, and business organizations. (...) As a neutral science-based organization, NCSE promotes science and its relationship with decisionmaking only, and does not take positions on environmental issues themselves."
Source: NCSE website