Union of Concerned Scientists ~ Citizens and scientists for environmental solutions. http://ucsusa.org/
Other sites I like:
Literary Mama: A Literary Magazine for the Maternally Inclined ~ a site of poetry, fiction, personal essays and book reviews by mother writers. I've had a poem and essay published by them. http://literarymama.com/
MomWriters Literary Magazine ~ a place for Mom writers to publish their work. A portion of Maggie's and my memoir appears in their archives.