Michael McCarthy: The symbol of nature's battle with climate change

Share
Related Topics

The giant panda for the age of climate change: such has become the fate, in emblematic terms, of Ursus maritimus, the great white bear of the north. As the panda logo of what was the World Wildlife Fund, 50 years ago, came to symbolise all threatened animals, so the image of a polar bear on a melting ice floe has come to stand for the dire consequences of global warming.

There have been wild exaggerations: that all polar bears are immediately threatened, or even on the brink of extinction. In reality, some of the world's 19 polar bear sub-populations are doing well; some are increasing. But others are not, and with the more southerly groups, such as that in Hudson Bay, the effects of the increasingly rapid melting of the sea ice are now working through: these animals have grown measurably smaller and weaker, and the population has dropped by a quarter in 30 years.

The point about the new study from the University of Alberta is that it is science rather than modern mythology, based on mathematical models rather than guesswork; it simply plots how reduced time hunting for seals translates into reduced polar bear body fat, energy, ability to bear pups and to survive.

And the hunting time is reducing, by about a week every decade, and is likely to continue to reduce, if the sea ice continues to shrink, as it is likely to do, unless the laws of cause and effect are suspended, and our pumping out of hugely increasing amounts of a gas we know retains the sun's heat in the atmosphere turns out to be effect-free.

React Now

Latest stories from i100
Have you tried new the Independent Digital Edition apps?
iJobs Job Widget
iJobs General

Maths Teacher

£110 - £200 per day: Randstad Education Leeds: Secondary Maths Teacher for spe...

Maths Teacher

£90 - £160 per day: Randstad Education Leeds: Secondary Science Teacher (mater...

Maths Teacher

£110 - £200 per day: Randstad Education Leeds: Secondary Maths Teacher for an ...

Maths Teacher

£22000 - £37000 per annum: Randstad Education Leeds: A West Yorkshire School i...

Day In a Page

Read Next
 

i Editor's Letter: The campaigning is over. So now we wait...

Oliver Duff Oliver Duff
In this handout provided by NASA from the the Earth-orbiting International Space Station, weather system Arthur travels up the east coast of the United States in the Atlantic Ocean near Florida in space. The robotic arm of the Space Station Remote Manipulator System or Canadarm2 is seen at upper right. According to reports, Arthur has begun moving steadily northward at around 5 kt. and the tropical storm is expected to strike the North Carolina Outer Banks  

Thanks to government investment, commercial space travel is becoming a reality

Richard Branson
Mystery of the Ground Zero wedding photo

A shot in the dark

Mystery of the wedding photo from Ground Zero
His life, the universe and everything

His life, the universe and everything

New biography sheds light on comic genius of Douglas Adams
Save us from small screen superheroes

Save us from small screen superheroes

Shows like Agents of S.H.I.E.L.D are little more than marketing tools
Reach for the skies

Reach for the skies

From pools to football pitches, rooftop living is looking up
These are the 12 best hotel spas in the UK

12 best hotel spas in the UK

Some hotels go all out on facilities; others stand out for the sheer quality of treatments
These Iranian-controlled Shia militias used to specialise in killing American soldiers. Now they are fighting Isis, backed up by US airstrikes

Widespread fear of Isis is producing strange bedfellows

Iranian-controlled Shia militias that used to kill American soldiers are now fighting Isis, helped by US airstrikes
Topshop goes part Athena poster, part last spring Prada

Topshop goes part Athena poster, part last spring Prada

Shoppers don't come to Topshop for the unique
How to make a Lego masterpiece

How to make a Lego masterpiece

Toy breaks out of the nursery and heads for the gallery
Meet the ‘Endies’ – city dwellers who are too poor to have fun

Meet the ‘Endies’ – city dwellers who are too poor to have fun

Urbanites are cursed with an acronym pointing to Employed but No Disposable Income or Savings
Paisley’s decision to make peace with IRA enemies might remind the Arabs of Sadat

Ian Paisley’s decision to make peace with his IRA enemies

His Save Ulster from Sodomy campaign would surely have been supported by many a Sunni imam
'She was a singer, a superstar, an addict, but to me, her mother, she is simply Amy'

'She was a singer, a superstar, an addict, but to me, her mother, she is simply Amy'

Exclusive extract from Janis Winehouse's poignant new memoir
Is this the role to win Cumberbatch an Oscar?

Is this the role to win Cumberbatch an Oscar?

The Imitation Game, film review
England and Roy Hodgson take a joint step towards redemption in Basel

England and Hodgson take a joint step towards redemption

Welbeck double puts England on the road to Euro 2016
Relatives fight over Vivian Maier’s rare photos

Relatives fight over Vivian Maier’s rare photos

Pictures removed from public view as courts decide ownership
‘Fashion has to be fun. It’s a big business, not a cure for cancer’

‘Fashion has to be fun. It’s a big business, not a cure for cancer’

Donatella Versace at New York Fashion Week