Polar Bear Specialist Group says its global population estimate was “a qualified guess”
By Dr. Susan Crockford | Watts Up With That? | June 2, 2014
Last week (May 22), I received an unsolicited email from Dr. Dag Vongraven, the current chairman of the IUCN Polar Bear Specialist Group (PBSG).
The email from Vongraven began this way:
“Dr. Crockford
