Responding to a spate of scams, the Financial Industry Regulatory Authority has issued an investor alert regarding "green energy" investments.

"We have seen a lot of e-mail, spam and investment pitches that involved various forms of green energy and alternative energies," John Gannon, a FINRA senior vice president for investor education, said in an interview. "People are promising advisers and investors low-priced stocks to invest in green energy technology."

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