We need someone with qualifications http://www.cleanmedeurope.org/staytal-side-effects.pdf staytal 30 Many Alaskans are skeptical about the climate link. "Permafrost has been thawing since the last Ice Age," says Jeff Curley, an engineer for the Alaska Department of Transportation, saying its amount depends on naturally-occurring variability. He notes the state's temperatures have fluctuated every 30 or so years.