Bob Downing

Anti-fracking activist Sandra Steingraber is done with the Sierra Club.

The visiting professor at Ithica College, author, ecologist and cancer survivor is unhappy that the Sierra Club accepted $25 million from Chesapeake Energy Corp. from 2007 to 2010.

That news broke in February in Time magazine.

She has written a personal letter to the Sierra Club that ran on the Orion magazine blog. Click here to read it.