Calling on the US government under President Barack Obama to set up an Office of Risk and Response at the White House in 2012 to study risk and response issues related to Polar Cities for Survivors of Global Warming in the year 2500 AD, perhaps sooner!

references: Richard Posner, author of 2004 book "Catastrophe: Risk and Response" and a US judge

also: see ideas of Robert Crease at SUNY and Nick Bostrom at Oxford