Episode 4: Decide on a presentation plan that makes you feel prepared to communicate an idea to an audience confidently and passionately.

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This is episode 4 of the animated series, “Public Speaking 101.” Ideas change everything — and since language lets…

Travel into the digestive system to see how food is turned into waste, and what causes the different colors and textures of poop.

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The average person poops out approximately 11,030 kilograms of cumulative waste in a lifetime. That’s the equivalent of…

Episode 5: Learn to develop your voice and body language so that you are conveying meaning authentically, confidently, and comfortably.

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This is episode 5 of the animated series, “Public Speaking 101.” Ideas change everything — and since language lets…

Get to know the story of Antigone, daughter of Oedipus, who was determined to give her slain brother Polyneices a proper burial.

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The gods watched as Oedipus’ daughter, Antigone, stole out of the palace in Thebes the morning after a devastating battle.…

Episode 6: Find a way to build trust, interest, and a connection with your audience so that they will be open to what you have to say.

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This is episode 6 of the animated series, “Public Speaking 101.” Ideas change everything — and since language lets…

Dig into what circumstances allow for an accidentally amputated limb to be reattached, and what options you have when it can't be.

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In order to reattach a severed limb after an accident, a number of things need to go right— and quickly. A clean cut, properly…

Explore the Big Whack theory, and how the event could have created the Moon and given Earth its all-important axial tilt.

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4.5 billion years ago, Earth was struck by a rock the size of Mars flying 9 kilometers a second. The force of this collision temporarily…

Learn more at https://brilliant.org/TedEd

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In one of Aesop’s fables, a crow is searching for water. It spies a pitcher— but the water inside is beyond its reach. So, the crow begins dropping in pebbles. One-by-one, they displace the water, and the crow…

Dig into the science of how and why fireflies glow, and how their bioluminescent signals differ between males and females.

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The first firefly is thought to have lived over 100 million years ago, illuminating the night with a glowing green light. And today…

Explore how saunas can affect your body, and dig into the health benefits and limitations of this millennia-old tradition.

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Finnish sauna, Roman balneae, Japanese onsen, and Indigenous American sweat lodges are just a few examples of how cultures across…

Explore how big-headed ants have changed an entire ecosystem in Kenya, from its insects and plants to its biggest predators.

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In the early 2000s, one of the world’s most widespread invasive species landed in Kenya’s Laikipia Plateau: big-headed ants.…

Trace the evolution of dog breeds, and find out why their characteristics, behaviors, and personalities vary so widely.

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The immense physical variety of dogs makes them among the world’s most diverse species and likely the one with the greatest range…

Puzzle through this classic ethical dilemma and decide: should parents be able to choose genetic traits for their children?

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Andre and Leslie are a deaf couple who have decided to have a child, and they’re considering using a process to ensure deafness…

Dig into the history of credit cards in the United States, and how they have evolved since the 1950s into the industry we know today.

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Today, credit cards are a $500 billion-a-year industry. Banks consider these lines of credit when deciding whether or…