Ideas Worth Exploring

Optimization is about maximizing or minimizing something. The math behind how you do that has taught me some important life lessons, including: (Gradient descent) Incremental progress with regular course corrections will eventually get you where you want to go. (Soft constraints) Giving yourself some wiggle room can help you avoid black and white thinking. (Local minima) Sometimes things have to g...

I’ve been interested in investing recently, the idea that if you have money then you can use it to make more money. This is a really important topic that I wish my past self had understood better, and so I’m going to break the usual rule of only doing science so that I can dive into this other thing that interests me, which is figuring out what the evidence says is the best way to invest money.

If we want the globe to stop warming, then we need to get to net zero greenhouse gas emissions. Methods to reduce emissions include: renewable energy, electric vehicles, feeding seaweed to cows to stop them from burping so much, turning poop into jet fuel, and resurrecting the mammoths. We’re also going to cover what individual people can do to make the most difference in the fight against global...

Climate change will cause droughts, floods, heat waves, and might even make our vegetables less nutritious. In this episode we will talk about some of the consequences global warming will have on animals and humans, and how much of an impact we should expect. This is the second of a 3-part series on climate change.  A couple sources: World Economic Forum data https://www3.weforum.org/docs/WEF_Quan...

Cow burps and car emissions are making the atmosphere heat up. This is the greenhouse effect, and it’s the same thing that turns your car into an inferno in the summer, with some nuance added. In this episode, we will discuss the physical science behind global warming. This will be the first of a 3-part series on climate change. 

If you ever encounter a situation where you think “who’s going to give in first?” it’s probably a game of chicken. This is the dynamic that shaped the arms races of Cold War, much of modern politics, and probably also quite a few of your interactions with other people. The game of chicken can be analyzed using game theory, and we’re going to start that discussion with a Reddit story of a guy who r...

What do tic-tac-toe, international politics, and animal grooming behaviors have in common? Much more than you might expect. In this episode we’re going to talk about game theory, a field of economics that lets us analyze social interactions by treating them as multiplayer games, and then using math and science to understand the best strategies to win those games. This episode is the first part, wh...

Polymers are everywhere. There are dozens of types of plastics, but there are also biological polymers such as DNA and proteins, and together, most of the materials you use every day are made of one of the two types of polymer. Even I’m made out of polymers! Let’s talk about what they are and why they’re taking over the world. 

Gambling, advertising, politics, and household chores. What do these have to do with each other? They’re all areas where your brain can steer you wrong when making decisions, as we’ll see in today’s episode. We’re going to be talking about one of the most influential ideas in the science of judgment and decision making, called dual process theory. This model is explained clearly in the book Thinki...

A walk through the history of the universe, starting with the Big Bang and the creation of the elements in stars, moving through the first molecular replicators, the RNA world hypothesis, and the evolution of life by natural selection. Punctuated equilibrium. The extreme destruction caused by the asteroid that extincted the dinosaurs. The development of animal culture, except for octopuses, which...

Pretend you’re making a new planet from scratch, and you want to know how the climate and weather patterns will be affected by each new feature you add. In this episode we will answer the questions: why is it warmer near the equator? Why does going up in elevation make it colder? We’ll also talk about the terms: albedo, the urban heat island effect, and the Coriolis effect. Finally, we’ll talk abo...

Unlike in Pokemon, evolution in our world happens slowly, over many generations. In this episode, we talk about how all life on earth is part of the same family and arose from a single common ancestor through a branching pattern of evolution, and how this happens through natural selection, or “survival and reproduction of the fittest”. Also, whales have fingers. I thought you ought to know.

You may have heard of something called the Big Bang, where all the stuff in the universe spread out from a single point. Did you know that the Big Bang is still happening? Well, it is, and you’re in the middle of it! This episode is about the universe, what it looks like, and how it is changing. Also, dark energy, the mysterious thing that makes up the majority of the stuff in our universe, and se...

The universe is full of stuff. Big stuff, small stuff, red stuff, blue stuff, normal stuff, ridiculously weird stuff. Most people don’t understand just how weird some of that stuff is. That stuff is called matter. It’s finally time to answer that classic question: what’s the matter. This episode will cover quarks, leptons (including neutrinos), antimatter, and dark matter.

What is a memory, physically? Do people really only use 10% of their brain? Is my short term memory bad, or is it just my short term memory? Answers to follow! 

Brains! Brains are made of neurons that use electrical and chemical signals in a way that somehow gets turned into us thinking and writing podcasts about brains. This episode is about how neurons do math by using salt to power a rollercoaster.

Keto, paleo, flexitarian, Mediterranean, it seems like everyone is interested in the newest diet fad. But does eating soy protein puree really make you healthier than eating chocolate covered caramels? Today we’re talking about  nutrients: fats, proteins, carbs, and all the other yummy-sounding molecules. 

How do ducks float? Is it because they’re made of wood? Well, why does wood float? The answer, in a way, has to do with a naked man and a crown. But the real answer is found in the physics of buoyancy. This episode is all about buoyancy, the upward force you feel when floating in fluid. 

You’re flying through the universe on your spaceship, seeing the sights, having a great time, when all of a sudden you see a black hole! Oh no, it’s sucking you in! Then it touches you and you get spaghettified, and that’s the end of you. That’s how you imagine an encounter with a black hole would be, right? No! It would be so much more interesting than that. Allow me to explain… 

X-rays, gamma rays, microwaves, radio waves, what do they have in common? They’re all colors of light that you can’t see. This episode about electromagnetic radiation, the thing that makes your eyes, your phone, and your oven function as intended.  I hope you find it enlightening!

People once believed that when you sneezed, your soul left your body, and so they would say “bless you” to prevent the devil from snatching your soul. Now, people don’t tend to worry about that as much, instead they worry about getting infected by invisible creatures floating in the sneeze droplets. Today we’re going to talk about viruses, those nasty microscopic opportunistic unemployed robots al...

You know the 10 second rule: if you drop a piece of bacon on the ground, you have 10 seconds to pick it up before the bacteria attack. That’s obviously a myth, right? Right? Right. That one is a myth. But today you’ll learn about several things that sound crazy but are actually true. For example, your poop is alive, bread has alcohol in it, bears dissolve in water, and skin cells are made out of c...

If you visit the Mütter museum in Philadelphia, you’ll see pieces of Einstein’s brain preserved on microscope slides. This episode is about an amazing secret that his brain discovered, the fact that time and space change when you move really fast: special relativity. 

Today we’re talking about how plants make babies! Spoiler alert: they're clones, many of them are clones. Also, the answer to a very controversial question: is a tomato a fruit or a vegetable?

When you hear the word “nuclear”, you probably think of explosions, radiation, and disasters. And yes, there was some of that, but it gets better. This is a story of spies and discovery. Also, if you didn’t know, the sun is a nuclear reactor.