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How To Make Alum Crystals

KidsChemistryExperimentsHow-toKids 110Kids 115Kids 120Science
Today we are going to learn how to make crystals with alum powder!

The Wonder of Weightlifting | Jaime Seeman | TED

AdultsHealthHumorScienceSportsWomen
With humor and hard science, obstetrician and gynecologist Jaime Seeman reveals why building muscle is one of the best ways to combat women’s top health risks.

Spaced Out

YouthAstronomyPhilosophyScienceSpaceYouth 110Youth 115Youth 120Youth 125Youth 130
In this episode, Sabrina gives us some perspective on this whole universe thing and how we fit into it.

Minerals, Crystals, & Gems

YouthEducationGeologyNatureScienceYouth 120Youth 125Youth 130
What’s the difference between minerals, crystals, rocks, and gems? In this lesson students will learn what these substances are and how they naturally form.

Are Asteroids Dangerous?

KidsAstronomyKids 125Kids 130ScienceSpace
A sample of Bennu could tell us exactly how threatening this near-Earth asteroid is, and how we defend ourselves against it.

Stars, Constellations, and More

ChildrenAstronomyEE1EE2ScienceSpace
By the end of this science lesson, students will be able to describe the characteristics of stars and constellations.

If you had the chance to be immortal, would you take it?

AdultsEthicsPhilosophyPsychologyScience
Explore different philosophers’ ideas on immortality and dig into their theories about the positives and negatives of eternal life.

Why Grass Grows Better Under Trampolines

AdultsEnvironmentGardeningNatureScience
If you’ve ever owned a backyard trampoline –or jumped on someone else’s– you might have noticed that the grass underneath it is longer and lusher than the grass in the rest of the yard. It’s not just that that grass isn’t getting mowed… in fact, when it does get mowed, you can see the weird effect even better! Instead there's something else –something shadier– going on here.

Glowing Turmeric Experiment

KidsBiologyExperimentsKids 110Kids 115Kids 120Science
Today we are going to learn about one very special fluorescent spice with my glowing jellyfish experiment.

Dinosaur Pee?

YouthBiologyNatureScienceYouth 110Youth 115Youth 120Youth 125Youth 130
Today we continue our exploration of the water cycle by drinking some dinosaur pee.

The Earth's Rotation

ChildrenAstronomyEE1EE2Science
By the end of this science lesson, students will be able to connect the position of the Earth to day and night, and recognize that different parts of the world experience day and night at different times.

The Great Aqua Adventure

YouthExperimentsScienceYouth 110Youth 115Youth 120Youth 125Youth 130
In this episode Sabrina shows us how the water cycle works and how you can create a mini water cycle right in your own kitchen!

Indoor Air Pollution

YouthLawEnvironmentHealthScienceYouth 120Youth 125Youth 130
In this science lesson students will examine the causes of indoor air pollution and investigate the role of environmental laws in keeping indoor spaces safe to breathe.

Discovering Rock Types

ChildrenEducationEE1EE2GeologyScience
By the end of this science lesson, students will be able to identify different types of rocks, describe their characteristics, and explain how they are formed.

One neuroscientist’s deep dive into perception and reality | Christof Koch

AdultsNeuroscienceScience
Everything you experience is filtered through your brain, and everyone’s brain is different. Neuroscientist Christof Koch explains how understanding this can deepen your connection to the world around you.

Scientists Have Found the Perfect Urinal Shape

AdultsDesignScience
Science can help solve the world’s most important problems, and what could be more important than keeping pee off your shoes? Yes, even the lowly urinal—and those who use it—can benefit from the occasional peer-reviewed study.

The Science Of Sinkholes

YouthEnvironmentGeologyScienceYouth 120Youth 125Youth 130
Explore the science of sinkholes, how they commonly form, and what human activities can also trigger them.

The Sun And Sun Safety

ChildrenEducationEE1EE2HealthSafetyScience
By the end of this science lesson students will be able to identify the sun as a star, explain what the sun does for the Earth, and list ways to protect our bodies from the sun.

The Science of Making Fruits and Veggies Last Longer | Jenny Du | TED

AdultsEnvironmentFoodInnovationScience
It's a hard nut to crack: in order to prevent food waste, we rely on plastic packaging and refrigeration, which harm the environment. What if we could turn to nature to address these challenges?

Orbits Are Odd

YouthAstronomyScienceSpaceYouth 110Youth 115Youth 120Youth 125Youth 130
Did you know that there is a massive black hole at the center of our galaxy? Today, Sabrina talks about this and more.

The Truth About Electrolytes In Drinks

YouthHealthScienceSportsYouth 110Youth 115
BBC Health Correspondent Melissa Hogenboom investigates whether we need sports drinks.