If this continues, the Klingon species will cease to exist.

If this continues, the Klingon species will cease to exist.

Well that's what happens in normal hybridization anyway.

In the '30s.

The animals in the forest died off.

Few believers left, I think.

Well, dinosaurs were big, different and gone.

This is our extinction event.

And these existed for tens of millions of years.

If these things are worth zero, this one bank declares bankruptcy, and it just gets resolved in the bankruptcy process.

And you're extinct.

Do you want to be responsible for the extinction of the human race?

Because classical music is an unbroken living tradition that goes back over 1,000 years.

Don't you mean extinct ?

Extinction.

And you can do strange things with this stuff. This is a baby gaur.

Those animals were in danger of dying out.

That species of bird is said to be in danger of dying out.

It's standard procedure. No one... Okay, All right.

. ..from its primitive beginning to the day of its annihilation.

You're looking at a great example here.

And I'm not talking about losing diversity in the same way that you lose your car keys.

It appears to be a fungally related ailment.

Extinction looms.

I'll get them bugs!

So basically, they're learning how to build on good news.

Because arraignment means ball.

Well, there are five major mass extinctions over the last 500 million years, called the Big Five.

Here's the other one.

Two years ago, you saw this creature.

Kiwis are, and so are these hawks trapped near Antarctica.

And we know who was there.

An endangered species. Yeah.

And this I can tell you about where President Obama would take America

I get the third element and so on, until I get down to the last row like so, okay?

And just as everybody got excited about it, bang!

We stand on the precipice of a dramatic moment of choice.

Extinct!

And today, we are in a situation where we estimate that we've transgressed three boundaries, the rate of biodiversity loss, which is the sixth extinction period in the history of humanity one of them being the extinctions of the dinosaurs nitrogen and climate change.

The beautiful bird is said to be in danger of dying out.

I thought that deadly disease was extinct. Yes, it was wiped from the galaxy generations ago, but I have given it life once again.

Extinction is part of evolution.

Extinction is a part of evolution.

And that, to a large extent, is what we want to do now.

Before we get into how to save the frogs,