TED-Ed: Lessons Worth Sharing

Bones might seem rock-solid, but they're actually quite porous inside. Most of the large bones of your skeleton have a hollow core filled with soft bone marrow. Marrow's most essential elements are bl...

27 Tammi 20204min

Centuries ago, the Inca developed ingenuous suits of armor that could protect warriors from even the fiercest physical attacks. These hardy structures were made not from iron or steel, but rather some...

24 Tammi 20204min

As the Roman Empire flourished, Scandinavians had small settlements and no central government. Yet by the 11th century, they had spread far from Scandinavia, gaining control of trade routes throughout...

21 Tammi 20204min

In the spring, just after a heavy rainfall, male and female fire ants swarm the skies for a day of romance, known as the nuptial flight. Thousands of reproduction-capable ants take part in a mating fr...

16 Tammi 20204min

This is episode 5 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hedge, as they attempt to save the world. The two embark on a q...

13 Tammi 20206min

After years of war, the world's kingdoms have come to an agreement. Every five years, teams representing the elves, goblins, and treefolk will compete in a grand tournament of dragon jousting. You hav...

10 Tammi 20204min

On a night in 1916, Russian aristocrats set a plot of assassination into motion. If all went as planned, a man would be dead by morning, though others had already tried and failed. The monarchy was on...

8 Tammi 20204min

How is it that a breathalyzer can measure the alcohol content in someone's blood, hours after they had their last drink, based on their breath alone? And could we use this same technology to detect di...

6 Tammi 20204min