This week making online gamers nicer to each other.

If they start taking ownership of the culture and saying that this kind of behavior is not something that we want to live with and we know that there are ways to stop it, then, you know, that could have a pretty significant effect.

And peering into the future of Antarctica's ice loss.

I would say it's the biggest unknown in future sea level rise.

Plus a bulky piece of kit for measuring gravity gets slimmed to the size of a postage stamp.

This is the Nature Podcast for March the 31st, 2016.

I'm Kerry Smith.

And I'm Adam Levy.

Prediction is very difficult, especially about the future. This saying, attributed to physicist

Nils Bohr, is often used to refer to quantum mechanics. But climate scientists know it applies

to their research too. After all,

how do you work out what the future holds for the climate when you've only got one planet? You're

still learning how it works and you can't carry out carefully controlled studies. Well, the typical

approach is to build computer models that simulate the relevant laws of physics and can be

checked against the real world. But what if you only have limited data from the real world?

And how do you cope with processes that haven't even happened yet, but might come into play in

the future? These are questions that scientists looking at the Antarctic are grappling with.

We only have satellite data of Antarctica

from the last few decades, so scientists have to work hard to make the most of the information we have.

But understanding what's going to happen to Antarctica's ice is vital to understanding how global

warming will impact the world. There's just so much potential sea level rise locked up in Antarctica.

There's such a vast amount of ice.

...