Discover Resources
Browse curated homeschool resources from the community
How Tall Can a Tree Grow Valentin Hammoudi
Reaching heights of over 100 meters, Californian sequoias tower over Earth’s other 60,000 tree species. But even these behemoths seem to have their limits: no sequoia on record has been able to grow taller than 130 meters. So what exactly is stopping these trees from growing taller, forever? Valentin Hammoudi investigates why trees have limited heights.
How Does Fracking Work Mia Nacamulli
Deep underground lie stores of once-inaccessible natural gas. There’s a technology, called hydraulic fracturing, or “fracking,” that can extract this natural gas, potentially powering us for decades to come. So how does fracking work and why is it a source of such heated controversy? Mia Nacamulli explains the ins and outs of fracking.
Should You Donate Your Dna to Help Cure Diseases Greg Foot
When scientists don't know the cause of a medical condition, developing a drug treatment takes significant trial and error, and lots of money— which is why we only have drugs for a small proportion of diseases. Researchers are hoping to change this using crowdsourced DNA. So how does this work, and what do your genes have to do with it? Greg Foot digs into the science of therapeutic targets.
A Brief History of Toilets Francis De Los Reyes
On sunny days, citizens of ancient Rome could be found exchanging news and gossip while attending to more urgent business at the public latrines. Today, most cultures consider trips to the restroom to be a more private occasion. But even when going alone, our shared sewage infrastructure is one of the most pivotal inventions in human history. Francis de los Reyes shares the history of the toilet.
The Electrical Blueprints That Orchestrate Life Michael Levin
DNA isn't the only builder in the biological world — there's also a mysterious bioelectric layer directing cells to work together to grow organs, systems and bodies, says biologist Michael Levin. Sharing unforgettable and groundbreaking footage of two-headed worms, he introduces us to xenobots and shares what this discovery may mean for the future of medicine, the environment and even life itself.
The Science of Skin Emma Bryce
Between you and the rest of the world lies an interface that makes up 16% of your physical weight. This is your skin, the largest organ in your body: laid out flat, it would cover close to 1.7 square meters of ground. But besides keeping your organs in, what is its purpose? Emma Bryce takes us into the integumentary system to find out.
How to Have Constructive Conversations Julia Dhar
In this practical talk, world debate champion Julia Dhar shares three essential features of productive disagreements grounded in curiosity and purpose. The end result? Constructive conversations that sharpen your argument and strengthen your relationships.
The Science of Hearing Douglas L Oliver
The ability to recognize sounds and identify their location is possible thanks to the auditory system. That’s comprised of two main parts: the ear, and the brain. The ear’s task is to convert sound energy into neural signals; the brain’s is to receive and process the information those signals contain. To understand how that works, Douglas L. Oliver follows a sound on its journey into the ear.
Can You Solve the Giant Spider Riddle Dan Finkel
Once every century, the world’s greatest spiders gather to compete in a series of grueling games. The winner will become the next arachnomonarch, able to command all the world’s spiders to their will. That day is today, and for the first time, you’re casting your name into the ring. Can you attain the mantle of spider supremacy? Dan Finkel shows how.
What s in the Air You Breathe Amy Hrdina and Jesse Kroll
Take a deep breath. In a single intake of air, your lungs swell with roughly 25 sextillion molecules, ranging from days-old compounds, to those formed billions of years in the past. In fact, many of the molecules you’re breathing were likely exhaled by members of ancient civilizations and innumerable humans since. But what exactly are we all breathing? Amy Hrdina and Jesse Kroll investigate.
What is the Rarest Color in Nature Victoria Hwang
Plants, animals, or minerals found in nature bear almost every color imaginable. There are two factors that influence what hues you see in the wild: physics and evolution. So, which colors are you least likely to see in the natural world? Victoria Hwang explores one of nature’s rarest spectacles.
How Squids Outsmart Their Predators Carly Anne York
There are about 500 species of squid, and they live in all the world’s oceans, making them a reliable food source for whales, dolphins, sharks, seabirds, fish - and even other squid. As a result, the squid's most extraordinary adaptations are those that have evolved to help them thwart these predators. Carly Anne York explains how these stealthy cephalopods have mastered deep sea survival.
Ancient Greece s Most Intriguing Erotic Poet Diane J Rayor
Over 2,500 years ago, one of ancient Greece’s most celebrated popstars and erotic poets enraptured listeners. The singer-songwriter offered a uniquely intimate perspective on love, passion, and longing, and was the first on record to combine the words “bitter” and “sweet,” to describe the ups and downs of romance. So, who was this revered figure? Diane J. Rayor uncovers the writings of Sappho.
Can You Solve the Risky Disk Riddle James Tanton
Your antivirus squad is up against a code that’s hijacked your mainframe. What you’ve learned from other infected systems, right before they went dark, is that it likes to toy with antivirus agents in a very peculiar way— and you’re the agent that’s been selected to go up against the malware. Can you figure out which disk that runs your mainframe has been corrupted? James Tanton shows how.
4 Signs of Emotional Abuse Viann Nguyen Feng
Emotional abuse can be incredibly damaging, increasing a person’s chances of developing depression and anxiety. But these behaviors can be subtle and difficult to spot, both from within and outside a relationship. It also often makes people doubt their perceptions of their own mistreatment. How can we recognize these patterns in real life? Viann Nguyen-Feng shares common signs of emotional abuse.
The Forgotten Queen of Egypt Abdallah Ewis
The year is 1249 CE. King Louis IX is sailing the Nile, threatening to overthrow the sultan and capture Egypt. Egypt’s commanders ask the sultan’s wife, Shajar Al-Durr, to report this news to the injured sultan. But they don’t know the truth: the sultan is dead, and she is secretly ruling in his stead. Who was this impressive woman? Abdallah Ewis details the reign of the Sultana of Egypt.