How Do Toilets Work?

Why did T. Rex have such tiny arms? That’s what our listener Nora wants to know. We’re going to find out why the biggest, most powerful predator to ever walk the Earth did it with a teeny tiny set of arms. Scientists have been coming up with answers for this question for decades ...  Show more

In this final mailbag episode of Summer 2026, Marshall and Lindsay address two listener questions, and learn about a surprising twist of evolution. Plus, listener reviews and comments! To get an invite to the next Tumble meetup, as well as receive birthday shout outs and ad free ...  Show more

Every time you flush, your poo and pee start an epic journey. From the toilet, to the sewers, to a treatment plant, our waste travels quite a distance only to end up cleaner by the end. We'll hear from a "PooTube" star about her experience with "the flush." We'll also hear about ...  Show more

Since the dawn of civilization, humanity has been trying to figure out where to put all its poop. While it's easy to take your average flushing commode for granted, it turns out thousands of years of research went into creating the toilets we use today. Tune in as Ben, Noel, and ...  Show more

Toilet Paper. It's something you use every day. But do you ever think about how it's MADE? We have chemical engineer Madion Matson on our show today to chat about the in-depth chemical and material processes that go into making the one thing none of us want to be without! Listen ...  Show more

You may call it the toilet, the loo, the privy, the potty, the can or even the bathroom, but whatever you call it, this everyday object has its roots in Bronze Age Pakistan. It even had a seat!But how did the toilet come to be? Given one third of the world’s population still live ...  Show more