

Listener Questions #47 - Plant Questions (featuring Dr. Manuel Lerdau)
Daniel and Kelly are joined by Dr. Manuel Lerdau to answer listener questions about toxic plants, seed germination, and micropropagation.

How far can we go with chemical rockets?
Daniel and Kelly explain the limitations of chemical rockets and how physics can propel humans to the outer reaches of the solar system.

Cyclospora (and other diarrhea-inducing parasites)
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.

Listener Questions #46
Daniel and Kelly answer listener questions about tick-induced meat allergies, experiencing quantum effects, and fibroids.

Sound (featuring audio wizard Mat Keselman)
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.

What is a space-time interval?
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.

Listener Questions #45
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.

Rat lungworm (featuring Dr. Chelsea Wood)
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.

Is dark matter a fudge factor?
Daniel and Kelly talk about what it means to be a physics fudge factor and whether DM is fudgy or solid science.

Listener Questions #44 - How fast can animals go, and how fast can animals grow? (featuring Dr. John Hutchinson)
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.