The time to divest in fossil fuels is now. Although equities may continue to grow for a while, they eventually plummet as fossil fuels become increasingly difficult to come by. By investing in alternative energy, Virginia Tech can get in on the ground floor, benefiting the infant industry that is destined to dominate the economy once the fossil fuels run out.
Virginia Tech's catchphrase is "Invent the Future." There is no future in fossil fuels. The future belongs to alternative energy.