Barnosky has argued in the past that the earth has now entered its 6th mass extinction period as the number of species disappearing from our eco-system is picking up pace.
A sub-story tells the tale of the archipelago of Kiribati in the pacific. This island-nation is only a few inches above the sea level and would be the first to disappear in rising sea-level scenario over the next couple of decades. So the people of Kiribati are actively looking for a solution, here is quote from the article:
Fearing that climate change could wipe out their entire Pacific archipelago, the leaders of Kiribati are considering an unusual backup plan: moving the populace to Fiji. Kiribati President Anote Tong told The Associated Press on Friday, March 9, 2012 that his Cabinet this week endorsed a plan to buy nearly 6,000 acres on Fiji’s main island, Viti Levu. He said the fertile land, being sold by a church group for about $9.6 million, could provide an insurance policy for Kiribati’s entire population of 103,000, though he hopes it will never be necessary for everyone to leave.
An alternative solution for the people of Kiribati is to build a floating city nation, such as one conceived in this image.