Team Polar Bear

Yes she looks all warm fur and big smiles, but beneath that fuzzy exterior  is an iron will that keeps team polar bear on their training schedule and in bed on time.

As both mom and coach one of her greatest challenges with the warmer weather poses is just keeping her little ones fed.

"You can't raise a champion on an empty stomach."

• Polar bears need to eat about 2kg (4.4 lbs) of fat a day to survive.

• Early melting sea-ice has reduced the polar bear's hunting season by three weeks.

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With a cynical edge and life of the party mentality Tundra keeps the rest of the team on their toes.

Definitely not a do-gooder Tundra's main interest in Saving Winter is ensuring she can still "carve powder" with her buddies.

• The ski season on many Canadian mountains could be cut short by as much as 60 days if current warming trends continue.

• Average temperatures on Whistler mountain are expected to increase up to 5 degrees C over the next 70 years.

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Incredibly upbeat and without a bad word to say to anyone, Mackenzie sees his job as keeping the teams spirits high (much to the irritation of his sister).

Although the melting ice is a problem for his speed-skating career Mackenzie is more concerned how it will effect others.

"I like jogging and swimming too, but what about all the dads that will never get to teach their kids pond hockey?"

• Ice on Canadian lakes is breaking up and melting 10-15 days earlier than 30 years ago.

• By the end of the Century the skating season on Ottawa's Rideau Canal could be reduced to one week.

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