The Geological Society of America (or GSA) is a nonprofit organization edicated to the advancement of the geosciences. The society was founded in New York in 1888 by James Hall, James D. Dana, and Alexander Winchell, and has been headquartered at 3300 Penrose Place, Boulder, Colorado since 1968. As of 2007, the society has over 21,000 members in more than 85 countries. The stated mission of GSA is "to advance the geosciences, to enhance the professional growth of its members, and to promote the geosciences in the service of humankind". Its main activities are sponsoring scientific meetings and publishing scientific literature, particularly the journals GSA Bulletin and Geology. Its newest publication endeavor is the online-only science journal Geosphere. GSA also publishes a monthly news and science magazine, GSA Today that is open access online.