Climate Central
An independent organization of leading scientists and journalists researching and reporting the facts about our changing climate and its impact on the American public.
A global sustainability movement.  Its name derives from the scientific consensus that 350 parts-per-million (ppm) is a safe level of carbon dioxide that can sustain life on Earth.  We are now at 395 ppm and increasing.

Lindsay Abrams
Ms. Abrams writes about all manner of things related to sustainability for

Physicians, Scientists and Engineers for Healthy Energy
"...provides a multi-disciplinary approach to identifying reasonable, healthy, and sustainable energy options for everyone... [using] objective, evidence-based information.

Climate science from climate scientists.