See also:

• Regional: North America: United States: Massachusetts: Science and Environment  (68)

Amateur Telescope Makers of Boston (ATMoB) - Club supporting observation, star parties, telescope design/building/improvement and astro-photography..

Assabet River Rail Trail - Non-profit organization to create, promote, and help maintain a multi-purpose recreational trail through the communities of Marlborough, Hudson, Stow, Maynard, and Acton..

Charles River Natural Valley Storage Area - Includes flood control, recreation, and preservation information..

Eastern Massachusetts Hawk Watch - Information on where are the best hawk sighting locations, how to report a sighting and volunteering for the organization..

NE Soil - Featuring soil information by county, ground penetrating radar, GIS, and soil profile photos..

Organization for the Assabet River - Works to preserve and protect the health and beauty of the Assabet River and its watershed..