Kate Marvel has watched the world end many times.

She's a physicist who works with climate models.

You can do terrible things to the planet and a climate model. You can set off a volcano. You can

remove all the land. You can remove all the water, you can make

the earth spin backward. You can do any experiment you want within these climate models,

but climate change isn't just happening in the computer models, it's happening here. Kate has

watched sea levels rise and temperatures climb. She's watched weather become more and more

extreme. And she started to realize that it was affecting her to see this happening to our planet,

both in her climate models and in real life. I was struggling a little bit at first because I

had these feelings, but at the same time, I was a

scientist and I thought, oh, aren't scientists supposed to be cold and objective and neutral?

And I felt bad that I was feeling things when I was watching the climate change around me.

And then, you know, I kind of realized, like, I can't be objective because I live

on Earth and everybody and everything that I love is here. And then thinking about it a little bit

harder, I realized, you know what, when scientists say we don't have feelings, that doesn't

make us more credible. That makes us liars. And who's going to believe scientists if we lie about how we feel?

From the newsroom of the Washington Post, this is Post Reports weekend. I'm Maggie Penman. I'm the executive producer of the show, and I'm your guest host. It's Saturday, June 21st.

This weekend, large parts of the country are experiencing extreme heat and humidity.

Around 170 million people in the U.S. are experiencing temperatures above 90 degrees.

Alaska issued its first ever heat advisory this week. So today I wanted to share a

conversation I had recently that made me feel surprisingly hopeful. It's with this climate

scientist Kate Marvel. She has a new book out this week called Human Nature, Nine Ways to

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