TED-Ed

How do gas masks protect people from airborne threats and pollutants? Dig into the science behind the technology: t.ted.com/jrAMKl0

After two Americans staked claim to reaching the North Pole, a Norwegian explorer and a British naval officer each set out for the last unmapped region in the world in what newspapers called a “Race to the Pole”: t.ted.com/g3hsfpU

Pandora has opened the forbidden box and unleashed chaos upon the world. Now it’s time to meet the gods who could help you restore balance— and save the realm. Join forces with Olympians in Pandora’s Legacy to set the world back on its axis: t.ted.com/8xmkqL0

Want to become a better writer? Here are 10 helpful tips: t.ted.com/8ro0a2q

A holy man stopped by the home of a trio of siblings and told them of a Magic Mountain, where they’d find incredible treasures. But, he said, only a true hero could complete the journey. Dig into the Bengali legend of Kiranmala's quest: t.ted.com/wwSTvBO

NEW VIDEO: Should we replace politicians with randomly selected people? Dig into sortition, a system where officials are selected via lottery, and how it could address problems facing modern democracies: t.ted.com/mEormB9

NANOGrav has detected evidence of a perpetual background hum of gravitational waves rippling through our universe. So what exactly are gravitational waves, and what does this groundbreaking discovery mean? t.ted.com/yayzWSb

Four new games have joined the TED Games hub! Rush Hour rewards reasoning. Spellcheck celebrates linguistic chaos. Cheat Sheet tests trivia. And Pixellence reveals art. These games deliver fresh daily challenges built for curious thinkers. Play now: t.ted.com/beKHdKM

Get to know one of the most infamous scientific rivalries in history, known as the Bone Wars: t.ted.com/d25rpFW

This is what you're actually inhaling when you vape. (Hint: It's not water vapor.) t.ted.com/GDoMpH7

Two warriors, at one time close friends, find themselves on opposite sides of a war— and must face each other in single combat. Who will emerge victorious? t.ted.com/reklmpm

NEW VIDEO: Plastic is everywhere: in our clothes, our food, the air we breathe. And plastic is now also in our bodies. But how exactly do these microscopic particles affect our health? Dig into how microplastics can interrupt your body’s processes: t.ted.com/Rb1veoh

Today people around the world are celebrating St. Patrick's Day, but what exactly are the origins of this holiday? t.ted.com/VhW776l

"Dance can help restore joy and stability in troubled lives and ease the tensions in schools that are disrupted by violence and bullying." t.ted.com/TaK1WQa

“I found I could say things with color and shapes that I couldn’t say any other way.” See the world through the eyes of legendary painter and sculptor Georgia O’Keeffe: t.ted.com/hafhRQ9

How do lasers actually work? And could the laser weaponry we see in science fiction ever exist? t.ted.com/ZcD4Iug

Over 100,000 species of bacteria live in the dust bunnies in our homes, and thousands more live on our clothes and in our showers. Surprisingly, these tiny organisms could be the source of new medicines and technologies: t.ted.com/ML1Cc2C

Beware the Ides of March! On this day in 44 BC, Julius Caesar was assassinated... but why? t.ted.com/c1nBNTT

Celebrate Einstein's birthday by trying your hand at a riddle supposedly written by the genius himself: t.ted.com/Ki8dpnK

Identical twin astronauts volunteer for an experiment. One will remain on Earth, while the other will board a spaceship to travel to a star 10 light-years away. The twins wonder what will happen when they’re reunited. Who will be older? t.ted.com/Ry4opcZ