Jesse Rogerson

And they use a technique called x-ray fluorescence.

And they, the different inks light up in different ways depending on the light that you hit on it.

And if you do it in the correct way, you can see like layer one, layer two, layer three, layer four, all the way down.

My favorite result so far is that they found Hipparchus' catalog.

They found that it was as precise as someone would have said from hundreds of years ago, so the lore lived up.

But what I really love about this story is you have Hipparchus' maps

And then you can compare them to Ptolemy's maps and see what was taken and what was changed and what was added.

You can see the growth of the knowledge from one generation to the next.

And that is an important step that we were missing, is how was science evolving of the sky over hundreds of years?

And now we have a big piece of the puzzle, Hipparchus' map.

No worries.

Always happy to be here.

Nailed it.

Thank you.

Thanks for having me.

Well, it depends on the species.

So one thing to keep in mind here is that all climate change, climate change happens everywhere and it affects the entire Earth.

But it is accentuated, the effects of it, in different ecosystems.

And one of those is at the poles, both north and south.

And in the Antarctic, the warming that's happening across the planet is about four times faster than the warming elsewhere on the planet, on average.