The otherworldly creatures in the ocean’s deepest…

The otherworldly creatures in the ocean’s deepest depths 

About 60 percent of the ocean is a cold, dark region that spans down to 11,000 meters. This zone is known as the deep ocean, and though it seems like an inhospitable and remote corner of the planet, it is actually one of the greatest habitats on Earth. Lidia Lins explores how so many species thrive in this mysterious underwater world.

View full lesson: http://ed.ted.com/lessons/the-otherworldly-creatures-in-the-ocean-s-deepest-depths-lidia-lins

Lesson by Lidia Lins, animation by Viviane Leezer.

By: TED-Ed.

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The otherworldly creatures in the ocean’s deepest…

The origin of countless conspiracy theories  Why can we find…

The origin of countless conspiracy theories 

Why can we find geometric shapes in the night sky? How can we know that at least two people in London have exactly the same number of hairs on their head? And why can patterns be found in just about any text — even Vanilla Ice lyrics? PatrickJMT describes the Ramsey theory, which states that given enough elements in a set or structure, some interesting pattern among them is guaranteed to emerge.

View full lesson: http://ed.ted.com/lessons/the-origin-of-countless-conspiracy-theories-patrickjmt

Lesson by PatrickJMT, animation by Aaron, Sean & Mathias Studios.

By: TED-Ed.

The origin of countless conspiracy theories  Why can we find…

Why is the US Constitution so hard to amend?  When it was…

Why is the US Constitution so hard to amend? 

When it was ratified in 1789, the US Constitution didn’t just institute a government by the people – it provided a way for the people to alter the Constitution itself. And yet, of the nearly 11,000 amendments proposed in the centuries since, only 27 have succeeded as of 2016. Peter Paccone explains why the US Constitution is so hard to change.

View full lesson: http://ed.ted.com/lessons/why-is-the-us-constitution-so-hard-to-amend-peter-paccone

Lesson by Peter Paccone, animation by Augenblick Studios.

By: TED-Ed.

Why is the US Constitution so hard to amend?  When it was…

Who IS Sherlock Holmes?  More than a century after first…

Who IS Sherlock Holmes? 

More than a century after first emerging into the fogbound, gaslit streets of Victorian London, Sherlock Holmes is universally recognizable. And yet many of his most recognizable features don’t appear in Arthur Conan Doyle’s original stories. So who exactly is Sherlock Holmes? Who’s the real “great detective,” and where do we find him? Neil McCaw traces the evolution of Sherlock.

View full lesson: http://ed.ted.com/lessons/who-is-sherlock-holmes-neil-mccaw

Lesson by Neil McCaw, animation by Lasse Rützou Bruntse.

By: TED-Ed.

Who IS Sherlock Holmes?  More than a century after first…

The threat of invasive species  Massive vines that blanket the…

The threat of invasive species 

Massive vines that blanket the southern United States, climbing high as they uproot trees and swallow buildings. A ravenous snake that is capable of devouring an alligator. Rabbit populations that eat themselves into starvation. These aren’t horror movie concepts – they’re real stories. But how could such situations exist in nature? Jennifer Klos gives the facts on invasive species.

View full lesson: http://ed.ted.com/lessons/the-threat-of-invasive-species-jennifer-klos

Lesson by Jennifer Klos, animation by Globizco.

By: TED-Ed.

The threat of invasive species  Massive vines that blanket the…

The Turing test: Can a computer pass for a human? What is…

The Turing test: Can a computer pass for a human? 

What is consciousness? Can an artificial machine really think? For many, these have been vital considerations for the future of artificial intelligence. But British computer scientist Alan Turing decided to disregard all these questions in favor of a much simpler one: Can a computer talk like a human? Alex Gendler describes the Turing test and details some of its surprising results.

View full lesson: http://ed.ted.com/lessons/the-turing-test-can-a-computer-pass-for-a-human-alex-gendler

Lesson by Alex Gendler, animation by Patrick Smith.

By: TED-Ed.

The Turing test: Can a computer pass for a human? What is…

Can plants talk to each other?  Can plants talk to each other?…

Can plants talk to each other? 

Can plants talk to each other? It certainly doesn’t seem that way: They don’t have complex sensory or nervous systems, like animals do, and they look pretty passive. But odd as it sounds, plants can communicate with each other — especially when they’re under attack. Richard Karban explains how.

View full lesson: http://ed.ted.com/lessons/can-plants-talk-to-each-other-richard-karban

Lesson by Richard Karban, animation by Yukai Du.

By: TED-Ed.

Can plants talk to each other?  Can plants talk to each other?…