Daniel and Kelly talk about a brain-infecting parasite of California Killifish, and discuss how the parasite might be altering the fish's behavior to its own ends.

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Daniel and Kelly take a tour through the various singularities that are predicted by general relativity.

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Daniel and Kelly answer questions about tornadoes, water purification, and massive moons in the sky.

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Daniel, Kelly, and Katrine discuss what happens during menopause, why evolutionary biologists think menopause occurs, and our current knowledge of the risks of hormone therapy.

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Daniel and Kelly dive into the hearts of blue giants, massive planets, and neutron stars to reveal a surprising limit on cosmic density.

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Daniel and Kelly answer questions about kissing bugs, magnetic fields in the Sun, and microbiomes in space.

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Daniel and Kelly answer a question from a listener about planets without stars and stars without galaxies.

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Microplastics are everywhere. How did they get there, and should we worry?

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