What do pine trees and jet fuel have in commo...

#158 Rebroadcast Gemstones come in all sorts of colors, but how do they get them? Are different stones super different at the molecular level? How do these different colors happen naturally? And how can those colors be replicated in lab-made gemstones? Let's get into it. Referenc ...  Show more

Why does a pencil work so perfectly? Why does graphite leave marks on paper instead of just crumbling apart? And what do pancakes, honeycombs, geckos, and intermolecular forces have to do with any of it? This week we follow a simple pencil all the way down to carbon atoms, graphe ...  Show more

What is chemistry? Neil deGrasse Tyson and comedian Chuck Nice take fan questions on exothermic reactions, PFAS, ice cream, sugar, fire, and more with Kate Biberdorf, aka Kate the Chemist.

NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: 

You are a tree. You are also not a tree. You are on a journey. You are also not on a journey. We use metaphors all the time to describe life, and funnily enough, so does the Bible. Joy Clarkson unpacks why we use metaphors, and she and Tsh also get into why we need to be rooted — ...  Show more

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The Space Ne ...  Show more

Why is it so hard to get a picture of the Milky Way? How much of our galaxy have we mapped? What the heck is a "barred spiral" and what does that have to do with our core? I discuss these questions and more in today's Ask a Spaceman!