I wanted to show the slide --
this slide, I think, is the most important one any of you will see, ever, because --
(Laughter)
(Applause) --
it shows nature versus humans, and goes from 1850 to 2050.
And so, the year 2000, you see there.
And this is the weight of all air and land vertebrates.
Humans and muskrats and giraffes and birds and so on, are --
the red line goes up. That's the humans and livestock and pets portion.
The green line goes down. That's the wild nature portion.
Humans, livestock and pets are, now, 98 percent of the total world's mass
of vertebrates on land and air.
And you don't know what the future will hold,
but it's not going to get a lower percentage.
Ten thousand years ago, the humans and livestock and pets
were not even one tenth of one percent
and wouldn't even have been visible on such a curve.
Now they are 98 percent, and it, I think, shows human domination of the Earth.
I give a talk to some remarkable high school students each summer,
and ask them, after they've asked me questions,
and I give them a talk and so on. Then I ask them questions.