SAN FRANCISCO (CBS / AP) — San Francisco State University has voted to stop investing its endowment in coal and tar sands companies, joining a growing list of universities that have decided to stop investing in fossil fuels.

The school’s foundation, which oversees a $51.2 million endowment, also voted in May to look into removing all future investments in fossil fuels companies.

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SFSU’s decision announced Tuesday is part of the national Fossil Free divestment campaign, an advocacy strategy modeled after the anti-apartheid efforts of the 1980s. It aims to limit investments in fossil fuel companies by making their stocks morally and financially unattractive.

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Five schools—Unity College and College of the Atlantic in Maine, Hampshire College in Massachusetts, and Sterling and Green Mountain colleges in Vermont—have also voted to divest.

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