Has anyone addressed this yet? from the article:
"We have determined that Titan's methane is not of biologic origin," reports Hasso Niemann of the Goddard Space Flight Center, a principal NASA investigator responsible for the Gas Chromatograph Mass Spectrometer aboard the Cassini-Huygens probe that landed on Titan Jan. 14.
Niemann concludes the methane "must be replenished by geologic processes on Titan, perhaps venting from a supply in the interior that could have been trapped there as the moon formed."