Everyone you’ll ever meet knows something you don’t. Especially if you meet John Hodgman— he’s an expert in expertise. John, Bill and Corey give expert advice to callers, including Kevin, who wants to know how he should propose to his girlfriend, and to Laurel calling from Ms. Cann’s 10th grade class, who wants an idea for her science project.

You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'

This episode is sponsored by Invitae (www.invitae.com), AirBnB (www.airbnb.com/animals), Proactiv (www.proactiv.com/science), DoorDash (code: SCIENCERULES), and Quality Logo Products (www.qualitylogo.com code: SCIENCERULES).

Ever wonder why your skin is the color it is? Decades ago, Dr. Nina Jablonski wondered the same thing. She’s here to tell us the science behind the story of our skin and to break down some of the deeply entrenched myths about race and color.

You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'

This episode is sponsored by Ministry of Supply (www.ministryofsupply.com code: SCIENCERULES), HelloFresh (www.hellofresh.com/sciencerules80 code: SCIENCERULES80), KiwiCo (www.kiwico.com/SCIENCERULES), and Quality Logo Products (www.qualitylogo.com code: SCIENCERULES).

Check out Lost at the Smithsonian, a new podcast from Stitcher! Comedian and pop culture fanatic Aasif Mandvi gets up close and personal with the most iconic artifacts at the National Museum of American History. Join Aasif and his guests as they explore how vintage clothing, ratty furniture, and mismatched shoes transformed into Fonzie's leather jacket, Archie Bunker's chair, and Dorothy's ruby slippers and became defining symbols of American culture along the way. Lost at the Smithsonian is out NOW - listen wherever you get your podcasts.

Subscribe to Lost at the Smithsonian in Apple Podcasts: https://podcasts.apple.com/us/podcast/lost-at-the-smithsonian-with-aasif-mandvi/id1478968631

The world population is approaching 8 billion people and it's not stopping there. So how will we address the needs of everyone on earth? Our guest this week Dr. Susan Hockfield says we out to look to biology for answers.

You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'

The word “psychopath" can be thrown around rather flippantly— but what does it really mean to be a psychopath? Psychopathy expert Dr. Arielle Baskin-Sommers of Yale University joins us to explain this anti-social trait a little more clearly. And answers some caller questions, including one from Nora who calls in to ask, “Can psychopaths have real relationships?” Plus, Arielle gets “dorky” science on us with a deep dive into the role of empathy in psychopathy.

You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'

This episode is sponsored by American Dental Association (www.ADA.org/sciencerules), Invitae (www.invitae.com), Quality Logo Products (www.qualitylogo.com code: SCIENCERULES), KiwiCo (www.kiwico.com/SCIENCERULES), and DoorDash (code: SCIENCERULES).

If we're going to embrace nuclear energy, we want to understand the effects of radiation and how to handle them. And that’s just the sort of work Dr. Lauren Jackson does! She joins us to talk about how radiation affects people, and what steps are being taken to protect the public in the event of a nuclear incident. Plus, she answers some caller questions, including one from Tiffany in Detroit who wonders: Should I be as scared of nuclear radiation as I am!?

You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'

This episode is sponsored by American Dental Association (ADA.org/sciencerules), Credo Mobile (www.credo.com/science), DoorDash (code: SCIENCERULES), MagellanTV (www.magellantv.com/sciencerules), and Quality Logo Products (www.qualitylogo.com code: SCIENCERULES).

What's intelligence? Ashley Llorens, Chief of the Intelligent Systems Center at Johns Hopkins Applied Physics Lab, has a good idea. He joins us to talk about intelligence of the human-type and the machine-type, and what it will take for machines to get up to speed. We'll take some caller questions, including one from Ahmed, who wants to know: will AI eventually take away our motivation to learn? Plus, Ashley talks about the connection between being a hip hop artist and a machine learning engineer.

You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'

This episode is sponsored by Credo Mobile (www.credo.com/science), KiwiCo (www.kiwico.com/SCIENCERULES), Quality Logo Products (www.qualitylogo.com code: SCIENCERULES), and Honeybook (www.honeybook.com code: SCIENCERULES).

Combining consciousness and technology leaves us with some big questions. Questions that philosopher and cognitive scientist Dr. David Chalmers thinks about (someone's got to!). Caller Keith wants to know if consciousness can be manufactured, and Elizabeth asks if we will ever garner true emotion from AI? Chalmers gives his thoughts on those big questions, and experiments on Bill and Corey by kicking them in the shin!

You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'

This episode is sponsored by Starbucks, Credo Mobile (www.credo.com/science), The Great Courses (www.thegreatcoursesplus.com/SCIENCERULES), Quality Logo Products (www.qualitylogo.com code: SCIENCERULES), and Progressive Insurance (www.progressive.com).

Evolution doesn't want anything. You just have to be good enough to survive! Geologist, paleontologist, and author Dr. Don Prothero joins us to talk evolution, creationism and Big Foot! Plus, he gives listener Jacob some tactics to respectfully talk with creationists about evolution, and he answers Stephanie's burning question: Could mermaids have ever existed?

You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'

This episode is sponsored by Credo Mobile (www.credo.com/science), Starbucks, KiwiCo (www.kiwico.com/SCIENCERULES), Progressive Insurance (www.progressive.com), and Quality Logo Products (www.qualitylogo.com code: SCIENCERULES).

To solve any problem, you must be optimistic that you can find a solution. The problem of climate change is no different. We're joined by Dr. Michael Mann of Penn State, who's been studying climate science for decades, to talk the climate reality we're dealing with and to answer some calls. Mann gives caller Jacob some strategies for conversing with climate change skeptics, and he answers Emma's critical question: What is the single most important thing we can do right now to alleviate the pressures from climate change?

You can listen to ad-free new episodes of Science Rules!, only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'

This episode is sponsored by Progressive Insurance (www.progressive.com), The Great Courses (www.thegreatcoursesplus.com/SCIENCERULES), WGU (www.wgu.edu/sciencerules), and KiwiCo (www.kiwico.com/SCIENCERULES).