In which John Green teaches you about the European Renaissance. European learning changed the world in the 15th and 16th century, but was it a cultural revolution, or an evolution? We'd argue that any cultural shift that occurs over a...

Introducing a new type of public space, custom-fit for communities in need of a shot of hope and wonder. Artist and TED Fellow Matthew Mazzotta takes us across the US, sharing delightful projects that refresh space and place, spark...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on causal relationships.

T
ERMS:
Cause - a thing that gives rise t
o an event
Ef
fect - an event
Relationship - interconnection betwe
en parts of...

Tiny versions of chromosomes show up in things like birds, reptiles, and amphibians. These mysterious lint-like flecks may be the building blocks for our entire genomes.

Photographer James Balog shares new image sequences from the Extreme Ice Survey, a network of time-lapse cameras recording glaciers receding at an alarming rate, some of the most vivid evidence yet of climate change.

In 4 minutes, atmospheric chemist Rachel Pike provides a glimpse of the massive scientific effort behind the bold headlines on climate change, with her team -- one of thousands who contributed -- taking a risky flight over the rainforest...

Newly described wormlike fossils dating back over half a billion years might be our oldest ancestors, and researchers have mapped and visualized the physical structure of the microscopic communities growing on human tongues!

Solar Storms! Moaning Myrtle! Wondering what the frick is behind the solar flares that slammed Earth earlier this week? Hank lays out how that juicy ball of plasma we call the sun causes us trouble from time to time.

Today we’ll continue to explore sociology’s founding theorists with a look at Karl Marx and his idea of historical materialism. We’ll discuss modes of production, their development, and how they fit into Marx’s overall theory of...

You might think we've already found every kind of star by now, but astronomers think there are more that should hypothetically exist!

Physics doesn't just happen in a fancy lab -- it happens when you push a piece of buttered toast off the table or drop a couple of raisins in a fizzy drink or watch a coffee spill dry. Become a more interesting dinner guest as physicist...

There's a lot more to Saturn's rings than just looking awesome! Find out why!

With the same humor and humanity he exuded in "An Inconvenient Truth," Al Gore spells out 15 ways that individuals can address climate change immediately, from buying a hybrid to inventing a new, hotter brand name for global warming.

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 quest to collect three artifacts and...

What causes the Blood Moon?

Genuine apology goes beyond remorse, says legendary playwright Eve Ensler. In this frank, wrenching talk, she shares how she transformed her own experience of abuse into wisdom on what wrongdoers can do and say to truly repent -- and...

We're used to talking about planets as spherical objects, but a donut-shaped planet is theoretically possible. What would life be like on one of these?

Why do people feel so miserable and disengaged at work? Because today's businesses are increasingly and dizzyingly complex -- and traditional pillars of management are obsolete, says Yves Morieux. So, he says, it falls to individual...

For sculptor Jason deCaires Taylor, the ocean is more than a muse -- it's an exhibition space and museum. Taylor creates sculptures of human forms and mundane life on land and sinks them to the ocean floor, where they are subsumed by the...

Earth’s outer shell is made of two materials whose different densities and thicknesses give rise to two distinct “levels” on the planet’s surface.



Watch our new show Paradigms (U.S....

Accepting his 2008 TED Prize, author Dave Eggers asks the TED community to personally, creatively engage with local public schools. With spellbinding eagerness, he talks about how his 826 Valencia tutoring center inspired others around...

George Steinmetz's spectacular photos show Africa from the air, taken from the world's slowest, lightest aircraft. Join Steinmetz to discover the surprising historical, ecological and sociopolitical patterns that emerge when you go low...

Ever wonder what it looks like from a birds-eye-view? Hank explains they see more than you think!

You know the "forgotten middle": they're the students, coworkers and regular people who are often overlooked because they're seen as neither exceptional nor problematic. How can we empower them to reach their full potential? Sharing her...