A Revenue Neutral Carbon Tax for Stanford (Not Divesting Coal)

Last week, Stanford's Board of Trustees announced that the university would not directly invest funds from its endowment in coal mining companies.  Even the strongest advocates of this action acknowledge that it is a symbolic gesture with little direct effect on the coal industry or global greenhouse gas emissions.  But if a university administration wants to take symbolic (or real) action on climate change, is coal investment a wise choice?