An axolotl can regrow a whole leg—bones, muscles, and nerves—instead of just sealing the spot with a scar.
2 Sept 2026
The Night Shift: What Your Brain Does While You Sleep
Every night your brain gets busy—repairing the body, growing, and filing away the day's memories like a librarian sorting books. Follow a typical night from drifting off to dreaming, and find out why a missed night makes thinking foggy and moods grumpy.
13 Jul 2026
What Is DNA, and How Do You Inherit Traits from Your Parents?
Every person is built from a set of instructions so tiny they fit inside a single cell — but how do those instructions decide whether you have brown eyes or freckles? DNA carries a chemical code that gets copied and passed from parent to child, mixing and matching traits across generations.
13 Jul 2026
The Amazing Food-to-Fuel Factory Inside You
Every bite of food you eat goes on a wild journey through your body before it becomes the energy that powers your muscles, brain, and everything else.
13 Jul 2026
How Does Your Body Fight Germs? Meet Your Immune System
Every day, billions of tiny invaders try to sneak into the human body — and most of them never stand a chance. The immune system is a layered defense force made of specialized cells, chemical signals, and a remarkable memory that learns from past battles.
8 Jul 2026
Your Brain's Electric Highways
A single nerve cell fires an electrical signal faster than you can blink—but how does a tiny spark become a thought, a memory, or the decision to catch a ball? Starting from one nerve and its chemical messengers, this episode traces the path from electrical impulse to the bustling networks that let you think, feel, move, and dream.
8 Jul 2026
What Is Cancer, and Why Do Some Cells Grow the Wrong Way?
Every second, millions of cells in the human body copy themselves to keep tissues healthy — but sometimes the instructions inside a cell get scrambled, and it starts multiplying when it shouldn't.
8 Jul 2026
What Does It Mean to Be Alive?
A rock sits still, a flame dances and grows, and a kitten purrs — but which of these is actually alive? This episode tackles the surprisingly tricky question of what separates living things from non-living things, walking through the key characteristics scientists look for: growth, reproduction, response to surroundings, use of energy, and cells.
8 Jul 2026
What Are Cells, and Why Is Every Living Thing Made of Them?
Every living thing on Earth — from a blue whale to a single bacterium — is built from tiny units called cells.
8 Jul 2026
Survival of the Fittest: How Living Things Change Over Generations
"Survival of the fittest" doesn't mean the strongest or fastest always win — it means the living things whose traits best fit their environment are more likely to survive and have offspring. Over many generations, small inherited differences can add up to big changes in a population, from the color of a moth's wings to the shape of a finch's beak.
8 Jul 2026
How Do Living Things Make More of Themselves?
Every living thing on Earth reproduces — but not all of them need a partner to do it. Some organisms split in two, bud off copies, or even regrow from a broken piece, while others mix genetic information from two parents to create offspring that are all a little different.
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