Plastic Pollution Coalition
THE MISSION Plastic Pollution Coalition is a growing global alliance of organizations, businesses, and thought leaders working toward a world free of plastic

Astronomy Clubs & More | Connect with amateur astronomers
Get involved in the astronomy community! Find out what astronomy clubs, planetariums, observatories, and museums are near you.

Wikipedia:FAQ/Organizations – Wikipedia
The fact that anyone can edit Wikipedia means that it attracts public-relations professionals, as well as employees and supporters of a variety of organizations