In a paper published recently in BioScience, David Mortensen, professor of weed ecology at Penn State, and fellow researchers criticized this “single tactic” approach of herbicide-tolerant GM crops to control weeds. The paper says the approach will dramatically increase herbicide use and threaten environmental quality, create even more herbicide resistant “superweeds,” and encourage continued neglect of public research and extension investment in integrated weed management approaches in favor of chemical company profit-driven GMO approaches. In 2010, Mortensen told a US House Oversight Committee that the government should restrict the use of herbicide-tolerant GM crops and impose a tax on GM seeds to fund research and educational programs for farmers.