Alejandro, can you please talk a little bit about how you and Brigh decided to divide up the eras, and then I'll later get more into asking about this allocation era.

Yes.

And so it really builds on what Brigh had mentioned before, that, I mean, this collaboration started, it's hard to imagine, seven years ago about.

And we were surprised by the complete absence of anything similar to what we were looking to do, which was really that no prior book on the history of environmental law had taken what we thought a genuinely broad view.

Most sort of focus only on environmental protection areas, laws emerging from the 1970s or possibly the progressive era, missing, frankly, centuries of legal history that drove exploitation.

So we wanted to look at both sides of the coin of what we considered to be environmental law broadly construed, sort of the law that sort of protected it, protected the environment, but also the laws that harmed the environment.

And in that sense, it sort of-- we really wanted to think about this book as a history, a legal history, an environmental legal history, but one that could give lessons to offer for today's challenges.

Lead and gasoline