In other words, the population of polar bears in this region have not been the subject of a population study. (climate-resistance.org)
The number of polar bears in the world is four to five times greater than it was 50 years ago, increasing from around 5,000 to an estimated 25,000. (thenewamerican.com)
Additionally, the blogs often cite authors who do not publish regularly on polar bears in peer - reviewed journals. (insidescience.org)