Become a member to show your support for 350 Mass. Any contribution of $35 or more (or any recurring contribution) makes you a member for a year. Consider amplifying the impact of your climate action by donating to make this movement stronger!

All donations are tax deductible. Our tax identification number is 47-1015198.

If you would prefer to send us a check, you can make your check out to Better Future Project with the memo line: 350 Mass. Mail to: Better Future Project, 30 Bow Street, Cambridge, MA 02138. Better Future Project now accepts gifts in the form of appreciated stock of mutual funds, see instructions here.