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Hosts Lindsay and Marshall explore the science of hugging with Dr.

Hosts Marshall and Lindsay open the Tumble Mailbag to answer a listener's question about the future collision between the Milky Way and Andromeda, featuring astronomer Karen Masters.

Tumble explores Earth's magnetic field, explaining how swirling liquid iron in the outer core generates the force.

Hosts Lindsay and Marshall answer listener questions about the existence of space wormholes and the cellular similarities between fly wings and carrots.

Hosts Lindsay and Marshall explore why T-Rex had tiny arms, featuring eight-year-old Nora’s feeding frenzy theory.