Rats. Love 'em or hate 'em, (though you probably hate 'em), they're part of our world. And they've been out in full force: In New York City, health data show rat sightings doubled in the past year. It turns out they're a lot like us: They've colonized the whole planet; they're incredibly adaptable; they go wherever the resources are. And, they share one-fourth of our genome—meaning that when you look in the mirror, you're kinda seeing a rat staring back at you. So for this episode, we dove into the history of our rodent doppelgängers. What we found was a story that spans thousands of years and nearly every continent on Earth, from the fields of ancient Mongolia to the palaces of Victorian England to the laboratories of 20th century Maryland... and probably to a burrow near you.

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