Rowan Jacobson

The new ones are a lot better than that.

There was an era when that was true, and it was mostly an issue in Australia and New Zealand.

The use of certain chemicals

in like spray products and things like that.

We started to eat away at the ozone that blocks certain amounts of UV.

There's an ozone layer in the atmosphere that blocks UV.

And we got this ozone hole in the 70s and 80s.

It really started to become apparent.

But then we had the Montreal Protocol and got rid of the class of chemicals that was eating up that ozone.

One of the great environmental successes of all time, probably.

And so those holes have closed pretty much everywhere.

And the last remaining ones are continuing to close.

So we pretty much fixed the ozone problem.

And that was a great success.

But your question about, did something about us change?

I think that is a big key to this whole thing.

Because...

back in the day historically skin cancer was not an issue you don't really see it being talked about by anyone before the 20th century and then especially after world war ii it kind of explodes out of nowhere and continues to just rise and rise and rise through the second half of the 20th century and in into today so what changed like there wasn't the sun didn't get any stronger and if anything we get less sunlight

per person than we did back in the day when everyone was a farmer, when most people were farmers.

We have more indoor jobs today than we did in the 19th century.