Thursday, April 19, 2012 - 16:30 in Earth & Climate
Polar bears have been chilling on the ice far longer than is generally thought, new research suggests, and they probably interbred with brown bears at one point after the two species separated.
- Ancestry of polar bears traced to IrelandThu, 7 Jul 2011, 12:37:59 EDT
- Ancient DNA from rare fossil reveals that polar bears evolved recently and adapted quicklyMon, 1 Mar 2010, 14:22:23 EST
- With climate changes, polar bear and brown bear lineages intertwineThu, 7 Jul 2011, 12:37:49 EDT
- Grizzly bears move into polar bear habitat in Manitoba, CanadaTue, 23 Feb 2010, 13:09:55 EST
- Polar bears no longer on 'thin ice': researchers say polar bears could face brighter futureTue, 21 Dec 2010, 15:02:32 EST