Union of Concerned Scientists (USC)

Here's a link to the UCS web site:

Their above website has the following linked major categories of content.  Here's the wiki link to their related content:

Scientific Integrity
Global Warming
Clean Vehicles
Clean Energy
Nuclear Power
Nuclear Weapons & Global Security
Food & Agriculture
Invasive Species

"The Union of Concerned Scientists is the leading science-based nonprofit working for a healthy environment and a safer world. UCS combines independent scientific research and citizen action to develop innovative, practical solutions and to secure responsible changes in government policy, corporate practices, and consumer choices.

What began as a collaboration between students and faculty members at the Massachusetts Institute of Technology in 1969 is now an alliance of more than 250,000 citizens and scientists. UCS members are people from all walks of life: parents and businesspeople, biologists and physicists, teachers and students. Our achievements over the decades show that thoughtful action based on the best available science can help safeguard our future and the future of our planet."