Say Good-By to Arctic Foxes?
Arctic foxes failed to retreat to cooler climes when global temperatures rose in the past. A new study dampens hope that species will be able to adapt to climate change by moving towards the poles this time around, reports Nature. Comparing DNA from living arctic foxes with DNA extracted from fossils indicates that, at the end of the last ice age, foxes that lived in mid-latitude Europe simply died out rather than move north. The same could be happening now. Today, Alopex lagopus, is restricted to northern tundra in Scandinavia and Siberia, while 10,000 years ago, at the end of the last ice age, it lived in what's now Belgium, Germany and southwestern Russia. So will Arctic foxes join polar bears and half of all Earth's species threatened by the mass global extinction already underway, and hugely amplified by global warming? Maybe, says the latest installment of the IPCC (Intergovernmental Panel on Climate Change) report. Will our species ever do one righteous thing about it? --Julia Whitty