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Every episode
Daniel and Kelly’s Extraordinary Universe
30 episodes
Listener Questions #47 - Plant Questions (featuring Dr. Manuel Lerdau)
Aug 13, 2026 · 1 hr 10 min
Daniel and Kelly are joined by Dr. Manuel Lerdau to answer listener questions about toxic plants, seed germination, and micropropagation. See omnystudio.com/listener for privacy information.
How far can we go with chemical rockets?
Aug 11, 2026 · 49 min
Daniel and Kelly explain the limitations of chemical rockets and how physics can propel humans to the outer reaches of the solar system. See omnystudio.com/listener for privacy information.
Cyclospora (and other diarrhea-inducing parasites)
Aug 6, 2026 · 59 min
It's July 2026, and the United States is dealing with an outbreak of cyclospora. Diarrhea makes people think of Kelly, so today we're dealing with the many questions Kelly has gotten about parasites in our food supplies. See omnystudio.com/listener for privacy information.
Listener Questions #46
Aug 4, 2026 · 57 min
Daniel and Kelly answer listener questions about tick-induced meat allergies, experiencing quantum effects, and fibroids. See omnystudio.com/listener for privacy information.
Sound (featuring audio wizard Mat Keselman)
Jul 30, 2026 · 58 min
Daniel and Kelly chat with DKEU's audio engineer, Mat Keselman, about the physics of sound and give a behind the scenes look at how Mat works his magic. See omnystudio.com/listener for privacy information.
What is a space-time interval?
Jul 28, 2026 · 55 min
Daniel and Kelly break space, twist time, and then put it back together to explain the most important concept in relativity you've never heard of. See omnystudio.com/listener for privacy information.
Listener Questions #45
Jul 23, 2026 · 47 min
Daniel and Kelly wonder how many Extraordinaries are planning on becoming supervillains as they discuss how to make Jupiter explode, the changing colors of children's hair, and whether or not aliens could discover electromagnetism without iron. See omnystudio.com/listener for privacy information.
Rat lungworm (featuring Dr. Chelsea Wood)
Jul 21, 2026 · 53 min
Daniel and Kelly chat with Dr. Chelsea Wood about rat lungworm - a particularly unpleasant nematode parasite that is spreading way outside of its native range. See omnystudio.com/listener for privacy information.
Is dark matter a fudge factor?
Jul 16, 2026 · 57 min
Daniel and Kelly talk about what it means to be a physics fudge factor and whether DM is fudgy or solid science. See omnystudio.com/listener for privacy information.
Listener Questions #44 - How fast can animals go, and how fast can animals grow? (featuring Dr. John Hutchinson)
Jul 14, 2026 · 57 min
Dr. John Hutchinson is back to help Kelly and Daniel answer listener questions about how fast animals can grow, how fast animals can go, and whether animal size impacts average lifespans. Also, cheese. See omnystudio.com/listener for privacy information.
Of lice and men
Jul 9, 2026 · 53 min
Daniel and Kelly explore what lice can teach us about human evolution, and the role lice have played in some of humanity's most devastating wars. See omnystudio.com/listener for privacy information.
Did aliens put satellites into Earth's orbit pre-Sputnik?
Jul 7, 2026 · 54 min
Daniel and Kelly dissect the evidence presented in recent peer-reviewed science papers for pre-Sputnik artificial satellites in Earth orbit. See omnystudio.com/listener for privacy information.
Listener Questions #43
Jul 2, 2026 · 1 hr 2 min
Daniel and Kelly marinate in ethanol and saltwater, and reflect on the symmetries of antiparticles. See omnystudio.com/listener for privacy information.
The science of bathing (featuring Dr. Katrine Whiteson)
Jun 30, 2026 · 55 min
Daniel, Kelly, and Katrine talk about what bathing does to your microbiome, and weigh up the pros and cons. See omnystudio.com/listener for privacy information.
What broke the grand unified force in the early universe?
Jun 25, 2026 · 59 min
Daniel and Kelly walk through the early history of the Universe to explain how forces can be unified, or broken. See omnystudio.com/listener for privacy information.
Listener Questions #42
Jun 23, 2026 · 56 min
Zach joins Daniel and Kelly for a segment on art and science communication. Then Daniel and Kelly explore the concept of absolute hot, and what makes some rocks glow. See omnystudio.com/listener for privacy information.
The curious lives of social amoeba
Jun 18, 2026 · 55 min
Daniel and Kelly talks about a species of social amoeba that will die to help others. Why the heck does it do that? And bonus: the amoeba are farmers! See omnystudio.com/listener for privacy information.
What are JWST's little red dots?
Jun 16, 2026 · 53 min
Daniel and Kelly talk about the James Webb Telescope and something mysterious it saw See omnystudio.com/listener for privacy information.
Listener Questions #41
Jun 11, 2026 · 54 min
Daniel and Kelly answer questions from listeners about earthworms, the origins of the galaxy, and snails! See omnystudio.com/listener for privacy information.
What is a species? (featuring Dr. Scott Egan)
Jun 9, 2026 · 1 hr 5 min
Daniel and Kelly talk to Prof. Scott Egan about the meaning of species in modern biology. See omnystudio.com/listener for privacy information.
Could the Earth be at the center of the solar system?
Jun 4, 2026 · 50 min
Daniel and Kelly explain the bizarre Tychonic model of the solar system, which for centuries stood as a valid theory alongside the Copernican model. See omnystudio.com/listener for privacy information.
Listener Questions #40
Jun 2, 2026 · 52 min
Daniel and Kelly answer questions about relativistic paradoxes, parasitoid wasp viruses, and detector technologies. See omnystudio.com/listener for privacy information.
Are urban raccoons becoming domesticated?
May 28, 2026 · 57 min
A recent paper found tantalizing evidence that rural raccoons are showing evidence of domestication. So how long until we all have pet raccoons? And how well do we really understand the domestication process anyway? See omnystudio.com/listener for privacy information.
What is quantum contextuality?
May 26, 2026 · 51 min
Daniel and Kelly dig into the mysterious concept of quantum contexuality: how measurements depend on each other. See omnystudio.com/listener for privacy information.
Listener Questions #39
May 21, 2026 · 1 hr
Daniel and Kelly answer questions about muscle memory, water-less showers, and why everyone can't be ambidextrous. See omnystudio.com/listener for privacy information.
The Deep Seabed (featuring Dr. Andrew Thaler)
May 19, 2026 · 1 hr 16 min
Over 50% of Earth's surface is the deep seabed. Dr. Andrew Thaler joins Daniel and Kelly to talk about the amazing diversity of life on the deep seabed, the resources found here, and the rules that govern this region. See omnystudio.com/listener for privacy information.
How do signals get jammed?
May 14, 2026 · 49 min
Daniel and Kelly explain how signals get jammed, how to avoid being jammed, and whose music makes the best jam. See omnystudio.com/listener for privacy information.
Listener Questions #38
May 12, 2026 · 1 hr 2 min
Daniel and Kelly answer questions about aliens watching Earth, about lone species, and about the size limits of intelligence. See omnystudio.com/listener for privacy information.
The discovery of parasite life cycles
May 7, 2026 · 59 min
Parasites can have amazingly complicated life cycles - moving through a series of host species, and looking quite different while residing within each type of host. Frankly, this stumped scientists for a long time. In today's episode, Daniel and Kelly take a stroll through the history of science to explore how we finally started to figure parasite life cycles out. See omnystudio.com/listener for privacy information.
Can we use zero point energy?
May 5, 2026 · 52 min
Daniel and Kelly explain the nature of the quantum vacuum, whether its real or philosophical, and if it's possible to use to make your toast. See omnystudio.com/listener for privacy information.
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