And I actually, maybe because of my age, I grew up always with unleaded gasoline, but say more about how that science that was conducted in the park impacted, you know, lead exposure and pollution.

And this is my favorite story in the book.

It has everything because you start with Patterson being one of the scientists who worked on the atomic bomb.

And, you know, virtually everyone who did that work wanted to get back to basic science.

Right.

They were kind of horrified at what their work had wrought.

And so his advisor, Harrison Brown, who was a pretty famous scientist in his own right, he said, well, why don't you figure out the age of the Earth? You're really good with the mass spectrometer.

And I guess parks are important for archaeology because they just sort of preserve things as they are so parks really provide a great natural lab for archaeologists as well and you tell an interesting story about maybe one of the most important archaeological findings in the channel islands national park will you tell us a little bit about that