Professor Ian Plimer

It's currently in process and we can see it happening right now in Antarctica.

The ice sheets in West Antarctica have 150 geothermal areas and volcanoes underneath the ice.

That's because we're pulling apart Antarctica.

Once we pulled it apart, we'll completely change the ocean currents.

Antarctica is currently isolated.

Warm tropical water can't get to it.

We have a circumpolar current and it freezes.

Once we break up Antarctica, currents will be able to move and we will go back to the normal situation that planet Earth has been in, where it's been warmer and it's been wetter and sea level's been about 200 metres higher.

We've got extremely good evidence of that time and time again over the past.

So these 400 million year cycles, it's not quite 400 million years, it varies a little bit, but these are tectonic cycles.

We've got galactic cycles where every 143 million years we've got a bad address in the galaxy and we get cold.

We've got orbital cycles, these Milankovitch cycles, which get spoken about a lot, and they're cycles on about 100,000 years, 40,000 years, and 20,000 years, and that changes the distance we are from the sun.

And then we've got solar cycles, and we've got some long ones around 10,000 years, and we've just come out of a...

grand solar maximum.

We've got cycles about 217 years, sorry, 1500 years, and the 22-year cycle, which has been known for hundreds of years.

We've got lunar tidal cycles, where we push warm water up into the Arctic.

That's

from the moon, and that's every 18.6 years.

And so that combined with the ocean cycles, which are every 600 years, sorry, every 60 years, you can then plot the exploration of the North West Passage, and it's every 60 years.

You can see that it's warmer and people can get through.