Brine rejection

Wow! That's amazing! Not for the starfish, obviously. My dad was raving about Frozen Planet but I only caught one episode so far. Must catch up on the rest.

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Link's wrong.

[Aie. You wouldn't believe the trouble this simple link caused me... -W]

Yay! Someone else who's impressed with this one. Watched the whole sequence last week.

And you're right. I kept wondering how on earth they kept the cameras functioning in those temperatures and away from the different kinds of ice forming. Well away. The final shots of frozen starfish and other critters suspended below the ice waiting to provide a ready meal for others when the thaw begins were fan.tas.tic.

Adelady, the convenient thing about being underwater in such a locale is that the water is reliably ~0C, not all that cold for keeping equipment running properly. AIUI there are a lot more problems up top.

Yes Steve. But the amazing thing to me was how did they know exactly where to put cameras near the supercooled water down below - and just wait(?!?) for something to happen at the bottom for the water suddenly to do its ice thing _and_ not kill the camera.

Appartently, per
http://www.bbc.co.uk/nature/15835017

"When we were exploring around that island we came across an area where there had been three or four [brinicles] previously and there was one actually happening," Mr Miller told BBC Nature.

The diving specialists noted the temperature and returned to the area as soon as the same conditions were repeated.

It is explained here:

http://www.bbc.co.uk/nature/15835017

"Scientists can never afford that kind of money."

Totally wrong. Here's some science that costs unbelievable amounts of money: NASA. LHC. DARPA.

The US NSF has an annual budget of nearly $7 billion. And private spends more.

The story about "us poor scientists" runs very lame when you look at those sums.

It's not spread evenly, to be sure. But that's an entirely different issue.

A brilliant sequence in a fascinating programme. There must be some heavy-duty digital image processing going on too: outdoor time-lapse footage used to suffer horribly from flicker due to changing lighting conditions, but the many time-lapse sequences in Frozen Planet are super-smooth.

Episode 7 will be about the impact of climate change on the polar regions.

Mooloo:
The trouble with big number is that they seem big, even when they are not.

Total spending on all things climate and environmental in the US (US Global Change Research Program; http://www.globalchange.gov/) is about 2 billion dollars per year as of 2010. The total US budget was 3.5 trillion, or about 0.07% of total US spending. In contrast, total spending in the US on chewing gum is about 0.5 billion dollars per year, or about 25% of the budget to be spent on climate change.

8. Gareth Rees -- "Episode 7 will be about the impact of climate change on the polar regions."

Which has been cut from the US release by the broadcaster there, last I heard. Six episodes only.