LearningJoy Innovators: Science Podcast for Teens

Your school desk and your cotton shirt are made of sugar. Really! Join us as we shrink down to work on the assembly line inside a leaf, find out where the oxygen you breathe comes from, and discover how a plant turns sugar into walls, wood and cotton.

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!

A tall tree has no heart and no pump, yet it lifts water higher than a ten-story building. Join us as we tour a plant's two-pipe plumbing, meet the root hairs and fungi that mine the soil, and find out why roots can drown.

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!

A plant is built mostly from air and water, so why do farmers buy bags of fertilizer? Join us as we follow a leaf's sugar day and night, find the plant's secret food stores, and meet the tiny bacteria in bean roots that pull plant nutrients out of thin air.

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!

How many kids on bicycles does it take to toast one slice of bread, and what happens to solar power when the sun goes down? Join us as we wire up a bicycle generator, see why electric motors waste far less energy than fuel engines, tame the power grid's giant duck curve, and hunt down vampire power!

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!

The ocean soaks up a quarter of our extra carbon dioxide. Is that saving Earth or hurting the sea? Join us as we blow bubbles into purple cabbage water, climb the pH number staircase, and see how extra acid steals the building bricks that corals and baby oysters need!

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!

Water puts out fires, so how can warm ocean water act like rocket fuel for a giant storm? Join us in the Storm Control Room as we uncover hidden heat in the clouds, test the seven percent sky-sponge rule, and meet the coastal mangrove trees that slow down giant waves!

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!

Volcanoes, the oceans, the Sun, or humans: who is adding the extra carbon dioxide to Earth's sky? Line up the four suspects and follow four real clues: ancient air bubbles trapped in ice, a water-tank audit, atomic weight fingerprints, and the case of the missing oxygen!

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!

How do you count something you can't even see? Join us as we count atoms with a kitchen scale, meet a number so huge that counting to it would take a million times the age of the universe, and crack the recipe for carbon dioxide with nothing but weighing.

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!

Nobody has ever seen inside an atom, so how do we know what's in there? Join us as we follow the clues, from a sealed mystery box to particles bouncing off gold foil, and discover the three tiny parts that build every atom in the universe.

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!

Ice melts and freezes back, but a burning log never comes back. So do the tiny particles of matter change or not? Join us as we crack a paradox that puzzled scientists for centuries, and meet the schoolteacher who solved it with atoms.

Read along, try the hands-on challenge and take the quiz on LearningJoy, all free!