A peek into polar bears’ lives reveals revved-up metabolisms
In a world with declining Arctic sea ice, that could be a problem
BEARS ON ICE A study that put camera collars on polar bears showed that the bears have higher springtime metabolic rates than previous estimates.
A. Pagano/USGS
Female polar bears prowling springtime sea ice have extreme weight swings, some losing more than 10 percent of their body mass in just over a week.