Concerns that world is experiencing start of a long-term trend of decline in Antarctic sea ice.
Antarctica Logs 'Record-Smashing' Low for Sea Ice, Says NASA - CNET
Preliminary data shows hottest week on record. Unprecedented sea
2011 Arctic Sea Ice News and Analysis
Antarctica just hit a record low in sea ice — by a lot - The
Antarctica sea-ice hits new record low
Antarctic sea ice hit record lows again. Scientists wonder if it's 'the beginning of the end
Antarctic sea ice hits 'record-smashing' low coverage area - data
Antarctic Sea Ice Hits a Record Low, but Role of Warming Is
ENVIRONMENT: Antarctica sea-ice hits record low infographic