Dr Karl

So the journal called Nature Climate Science started in the year 2011 and since then the rise in ocean level is roughly equal to a AA battery.

57 millimetres.

And one third of that came from us being bad to the water and taking it out of aquifers.

I remember when I was doing a lot of my heavy duty four-wheel driving in the outback, I would come across a pipe in the middle of nowhere that had a tap and it was just running full.

And there was not a human within 50 kilometres.

There was no human dwelling within 100 kilometres.

And I'd eventually run across somebody and say, oh, there's an infinite amount of water in the aquifers.

And then as I kept on going back year after year during my test driving period, they'd say, you know, the pressure's dropped a bit.

Maybe we shouldn't just let it run.

Why did you leave it run in the first place?

Well, I've asked the clever people in physics, and I got lots of good answers from the students who tell me that they're kind of able to do simple things, but nothing really mind-blowing.

They're still...

They're past the level they were a few years ago, which was to say that, yeah, we're pretty sure that the two numbers that multiply together give you 15.

We're pretty sure they're five and three, probably.

They're past that, but they're still not fully usable.

And then jumping into the future, science fiction.

Read the books by Alastair Reynolds, their space opera, which covers the growth and the spread of humans throughout the entire galaxy.

And there are some people who have firstly memory chips implanted in their brains.

I would love a memory chip with the entire contents of Wikipedia and all my books.

And then secondly, they have quantum computers implanted in their brains.