Sentences with phrase «polar bears»

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

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.

Additionally, the blogs often cite authors who do not publish regularly on polar bears in peer - reviewed journals.

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

People will undoubtedly speculate about what this paper says regarding the prognosis for polar bears in a continually warming world.

I will start with polar bears for two reasons.

Like polar bear fur, it also reflects infrared light, making it practically invisible in those wavelengths.

A rabbit wrapped in a new textile inspired by polar bear hair keeps all its body heat in, so it stays both cosy and invisible to infrared imaging.

Well ain't that interesting: an animated depiction of a drowning polar bear.

For all we can tell they are healthy and happy, floating on their iceberg as polar bears do and have done since they've been around on this planet.

She hoped that sequencing and analyzing the DNA in these ancient samples would offer new information about how polar bears evolved.

I wondered what the similarity in extent for 2013 and 2009 might tell us about polar bear habitat development over the next month or so.

Then, are we really going to tell our native tribes and rich hunters that they can no longer hunt polar bears?

Nearly all said that global warming threatens polar bear populations.

Weight changes varied a lot for the nine female polar bears studied for 8 to 11 days.

This is a great read for fall, when polar bear encounter stories abound.

However, changing climates result in more polar bears visiting coastal communities earlier in the fall each year as sea ice retreats.

No matter how adorable polar bears look, these animals are not cuddly.

Second, using endangered polar bears and seals to sell air conditioning is just plain wrong, a contradiction in which there is no irony.

Can polar bears use terrestrial foods to offset lost ice - based hunting opportunities?

And new research emphasizes the importance of continuing to protect polar bears against the threats that climate change poses to their survival.

We're not dealing with greenhouse gases so we will be dealing with starving polar bears and disappearing populations.

In short, whether polar bears survived one or two warming periods of the past, they never have faced the kind of warming we will see in the next century.

Is there a similar disconnect between predictions and observations for polar bear survival?

In other words he was making the point that the investigation wasn't about the dead polar bears.

Have you ever wondered how polar bears came to be white?

This behavior likely derives from a shared genetic heritage with brown bears, from which polar bears separated about 600,000 years ago.

A new commercial shows polar bears dropping from the skies onto city streets and crushing the cars below.

Because polar bears are entirely dependent upon the sea ice for their survival, any observed and projected reductions in preferred sea ice habitats can only result in declines.

The survivors: is climate change really killing polar bears?

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

«We still don't know to what extent environmental changes will affect polar bear health and therefore its conservation,» say the authors.

A new study finds polar bears in the wild have higher metabolic rates than previously thought, and as climate change alters their environment a...

I feel that the baby polar bear has every right to live whether it is in a zoo or out in the wild.

Hmmm... Of the 25,000 or so polar bears wandering about, how many would be protected?

Lastly, the scientists evaluated different scenarios for the relationships between polar bear abundance and sea ice.

Figure 2: Global polar bear population status assessment even better than this.

I will be counting polar bears and checking the thermometer.

This beautiful color book is a «first science book» for preschoolers who love polar bears.

I don't think there is much in this that changes my view of what polar bears have done and what the future holds for the species.

That stance was hailed by groups concerned that polar bear protections could affect their businesses.