[Shane] Man, insects are cool.
They live in this whole other world, like, right beneath our feet.
♪ The checkerspots go through this cycle in the same place year after year.
[Camille] These butterflies are very sedentary.
They live in one little spot.
[Shane] And if the conditions aren't just right... they simply die.
Camille told me it's this fragility that first sprung into mind when NASA-- yeah, that's the space agency-- put a call out as part of their first climate science program.
They wanted to know if animals might be responding to climate change.
I thought Edith's checkerspot because we know it's very climate-sensitive.
[Shane] So what did Camille do that was so special?
Well, it's simple.
She gathered data.
I mean, like, a ton of data.
[Camille] So I had 4,000 sites to go visit.
[Shane] Traveling across all those sites, Camille was looking for patterns written in the lives of her butterflies.
What she found was many butterfly populations were crashing, in places even going locally extinct.
Then one day she traveled further up the mountains, where she didn't expect to find butterflies... and it was here, right in this spot that she discovered a totally new colony... and they're still doing better here than Camille ever thought possible.
[Camille] Butterflies are more abundant than I've ever seen.
Ah!
And it was so abundant that just now I found a mating pair, and that's very rare.
You know, that means, man, this population is doing well.
Oh!
That's a likely one.
Ah!
And there are the eggs.
Right there.
Voila.
And it's about 35 eggs.
Aren't they beautiful?
[Shane] Camille starts to see a survival pattern across the mountains, whole butterfly colonies dying out at lower elevations, and new ones appearing higher up, moving away from the heat towards cooler climes.
[Camille] Butterflies are evolving different adaptations to deal with the increasing temperatures.
[Shane] And Camille's data reveal that the butterflies aren't just moving up.
They're also moving north, heading away from the heating equator.
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