Sentences with phrase «of polar bears»

In other words, the population of polar bears in this region have not been the subject of a population study.

As they live further south than any other population of polar bears, the group is particularly vulnerable to the effects of climate change.

Climate change and the increasing impact of polar bears on bird populations.

Thus, the polar bear we should not under - estimate the importance of the polar bear as a key species indicating serious changes in the environment caused by global warming.

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.

Hot topic: The plight of polar bears captures the hearts of many, but are the ice caps still shrinking?

This is certainly an interesting paper that presents yet another picture of polar bear evolution.

The listing of the polar bear is a case in point.

Climate change is a reality however, and most of the world has seen lots of evidence of this in the form of images of polar bears and melting glaciers.

Let's hope that the survival of the polar bear doesn't become another hot potato that is tossed into the long grass - after burning one - too many fingers.

That is not to say that there may not in the future be drowning - related deaths of polar bears if the trend continues.

It draws attention to the effects that global warming is having in diminishing glaciers, leaving the future of polar bears decidedly uncertain.

Who could not form the impression that fat people were more responsible than the rest of us for the demise of the polar bear, if they took the magazine at face value?

Further evidence of the recent evolution of the polar bear is found in the existence of hybrids.

With its habitats shrinking and food supplies dwindling, the fate of the polar bear looks grim in the face of climate change.

This new visual tool allows scientists to see and learn what bears are actually doing, and over time will accurately document the true life of a polar bear.

For example, how exactly did they come up with the 2/3 loss of polar bears by 2050.

Go ahead, stop thinking of those polar bears.

A second team of researchers has framed guidelines for the conservation of the polar bear, and proposed 15 measures that could determine the factors important in saving the creature from ultimate extinction.

This is misleading, because vitamin A toxicity is mainly caused by synthetic sources, or by eating something ridiculous like the liver of a polar bear.

This really has nothing to do with the welfare of polar bears.

So, if this new estimate of the age of polar bear divergence from brown bears is right, polar bears have seen 2 periods warmer than the recent past.

The important point is that if we continue on our current greenhouse - warming path, it will be far warmer in 50 years than at anytime in the existence of polar bears.

Ice seals, one of the primary diets of polar bears, give birth in snow caves dug in sea ice during late springs.

It's yet another example of how the media feeds the politics of polar bears and prevents the advancement of science.

Now, a new, extensive comparison of the genomes of polar bears and their closest relative, the brown bear, has revealed how polar bears survive such unhealthy diets.

Has the image of polar bear become a hot potato that is becoming increasingly uncomfortable too handle?

The truth is that we clearly do not know enough about most of the polar bear populations to make the argument for listing.

But a new study reveals that climate - denying blogs that target the poster topics of polar bears and sea ice, use almost no peer - reviewed scientific literature.

The tale of the bald eagle's return from near extinction should provide encouragement to fans of the polar bear, whose habitat is threatened by climate change.

For the first time, researchers have measured the energy expenditure of polar bears in the wild during the summer months.

The same is true of polar bear populations as it is of sea ice extent and air, sea and surface temperature.

At the same time, it issued a special rule that prevented the regulation of greenhouse gas emissions on behalf of the polar bear.

Our study looks at the evolutionary history of polar bears.

Recent estimates suggest a 60 % reduction of the polar bear population by the year 2050.

, the free game design tool, which addressed empathy for the plight of polar bears.

We further suggest that drowning - related deaths of polar bears may increase in the future if the observed trend of regression of pack ice and / or longer open water periods continues.

So it seems much is at stake over the role of climate change in the future of the polar bear.