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Scientists Daniel and Kelly cannot stop talking about our amazing, wonderful, weird Universe! Each episode is a fun, easy-to-understand, and in-depth explanation of topics in science, from particles to black holes to moon colonies to ecosystems to parasites and everything else in the Universe!

Daniel and Jorge Explain the Universe

Daniel and Kelly talk to Ethan Siegal about whether we should expect physics to be explained by a single unified theory.

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Must there be a single unified theory of physics?

Daniel and Kelly talk about how aliens might experience the Universe and how it might shape their science, a topic from Daniel's new book "Do Aliens Speak Physics?"

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How might aliens perceive the Universe?

Daniel and Kelly get answers to listener questions about why we age from Dr. Venki Ramakrishnan, author of "Why We Die: The New Science of Aging and the Quest for Immortality".

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Why do we age? (featuring Dr. Venki Ramakrishnan)

Daniel and Kelly talk about how gravity, magnetism and relativity work together to create one of the most brilliant spectacles in the Universe.

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Relativistic beaming

Daniel and Kelly talk to Phil Metzger about the engineering challenges of building self-replication space probes.

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Can we explore the galaxy with self-replicating probes?

Daniel and Kelly answer questions about gravtational slingshots, megafauna and microscopic black holes!

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Listener Questions #18

Daniel and Kelly talk to Phil Halper about the many mysteries of the origins of the Universe.

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What came before the Big Bang?

Daniel and Kelly dig into the mysteries of magnetism, explaining how magnets work and what they reveal about the Universe.

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The Mysteries of Magnetism

Daniel and Kelly talk to Sean Carroll about where some of the basic assumptions we make about the Universe come from, and whether we need them.

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Does physics have to be causal and local?

Daniel and Kelly talk about the science behind the "zombie ants".

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Zombie ants

Daniel and Kelly talk to Dr. Steven Munger about phantom smells, stinky shirts, careers as a "nose", and more. 

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The science of taste and smell (with Steven Munger)

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