What's black and white all over?

So you know that riddle, why don't polar bears eat penguins? (If you don't know the answer, I'll leave it for you to solve. But below are a few hints...)

In today's Guardian, there is an article about these guys who are trying to ski across Antarctica. It's an interesting adventure story type deal, and the protagonists seem to fit the stereotype, even having an "Ovary Award".

But I digress...

Somewhere near the end of the article, is a little blurb about how this is not a purely selfish endeavour.

The team ... has spent time scouring the horizons for penguin colonies. If penguin numbers are great enough, the continent may have enough natural food to support a limited number of polar bears in an ambitious relocation programme to save the Arctic bears from the perils of climate change.

Okay, so a couple of points...

• Don'tcha think that maybe qualified bird spotters who can quantify what they are seeing should do this job?
  
• Am I the only one that feels that, you know, since we're just about done screwing up the polar bear's habitat, maybe we shouldn't just accelerate our meddling with the antarctic ecosystem?
  

I mean seriously...do these people know anything about the antarctic? Did they research penguins at all? Maybe they should go see March of the Penguins, and imagine a Polar Bear stumbling upon that colony of emperor penguins balancing their eggs on their feet during their over-wintering...