Polar bear cubs dying as swims get longer
Polar bear cubs forced to swim long distances with their moms as their icy Arctic habitat melts appear to have a higher mortality rate than cubs that didn't swim as far, a new study reports.
Source: http://pheedo.msnbc.msn.com/click.phdo?i=67a67a1d2790e157678f5d2dfb19b7ec