We still have a lot to learn about climate change, about why it's happening and what that means. But one thing is clear: It's real, alright. These talks provide a primer on the issue of our times.

Across history, protest has shaped societies in tremendous ways. These talks explore how movements catalyze monumental change.

Educator and activist Geoffrey Canada chose a powerful list of favorites — talks that address the cycles of poverty and gender violence, and offer bold suggestions for change.

The little things that you (yes, you) can do now (yes, now) to make a difference.

TED Studies, created in collaboration with Wiley, are curated video collections — supplemented by rich educational materials — for students, educators and self-guided learners. In Climate Change, speakers give talks that boldly illuminate the nature and scale of current-day climate science, policy and ethics. They explore the economics and psych...

Sure, we're looking beyond the planet to other worlds we may one day inhabit -- but a lot of this technology we've developed can be used for the good of the Earth, too.

Learn about the ways climate change is deeply altering how we live, where we live and the foods we eat -- ultimately threatening some of our most basic human rights.

We don't just need better laws -- we need better culture. Nate Garvis asks: What can we do to create an environment in which powerful institutions are used for the common good?

Here's a stat worth knowing: In the UK, 63% of men who finish short-term prison sentences are back inside within a year for another crime. Helping them stay outside involves job training, classes, therapy. And it would pay off handsomely -- but the government can't find the funds. Toby Eccles shares an imaginative idea for how to change that: th...

Designer Emily Pilloton moved to rural Bertie County, in North Carolina, to engage in a bold experiment of design-led community transformation. She's teaching a design-build class called Studio H that engages high schoolers' minds and bodies while bringing smart design and new opportunities to the poorest county in the state.

There are more ways to be civically engaged besides voting. Tap into your inner activist with these talks about inspiring change in your community.

Deepen your understanding of Climate Change with these carefully crafted educational exercises that let you get the most out of this TED Studies subject.

Written by the educators who created Climate Change, a brief look at the key facts, tough questions and big ideas in their field. Begin this TED Study with a fascinating read that gives context and clarity to the material.

New Yorker cartoonist Liza Donnelly shares a portfolio of her wise and funny cartoons about modern life -- and talks about how humor can empower women to change the rules.

How often do you see the true beauty of the night sky? TED Fellow Lucianne Walkowicz shows how light pollution is ruining the extraordinary -- and often ignored -- experience of seeing directly into space.

At TEDIndia, Mallika Sarabhai, a dancer/actor/politician, tells a transformative story in dance -- and argues that the arts may be the most powerful way to effect change, whether political, social or personal.

About this talk: Our love of technology is perhaps rivaled only by our fear of change. Every time technology advances, the ripple effect of change can cripple even the strongest companies. Development expert Patrick Forth notes that 75% of the Fortune 500 in 2020 will be names we’ve never heard of. Given this high rate of failure, how can large ...

A great teacher can change the trajectory of your life. Here, talks from teachers you'll wish you had.

Thelma Golden, curator at the Studio Museum in Harlem, talks through three recent shows that explore how art examines and redefines culture. The "post-black" artists she works with are using their art to provoke a new dialogue about race and culture -- and about the meaning of art itself.

After watching the collection of talks on Climate Change, read a thoughtful recap of the major points in this TED Study, and learn where experts believe things are headed.

Ready for a change? Let these talks help you move out of your comfort zone and embrace the beauty of sharing who you are with the world.

Here's a talk that could literally change your life. Which career should I pursue? Should I break up -- or get married?! Where should I live? Big decisions like these can be agonizingly difficult. But that's because we think about them the wrong way, says philosopher Ruth Chang. She offers a powerful new framework for shaping who we truly are.

Treo creator Jeff Hawkins urges us to take a new look at the brain -- to see it not as a fast processor, but as a memory system that stores and plays back experiences to help us predict, intelligently, what will happen next.

Military leaders have known for millennia that the time to prepare for a challenge is before it hits you, says scientist and retired US Navy officer David Titley. He takes us from the humanitarian catastrophe in Syria to the icy shores of Svalbard to show how the military approaches the threat of climate change, in a refreshingly practical, nonp...

Want your local politician to pay attention to an issue you care about? Send a monthly handwritten letter, says former mayor Omar Ahmad -- it's more effective than email, phone, or even writing a check. He shares four steps to writing a letter that works.

Given $50 billion to spend, which would you solve first, AIDS or global warming? Danish political scientist Bjorn Lomborg comes up with surprising answers.

Why is Al Gore optimistic about climate change? In this spirited talk, Gore asks three powerful questions about the man-made forces threatening to destroy our planet -- and the solutions we're designing to combat them. (Featuring Q&A with TED curator Chris Anderson)

Things are pretty shocking out there right now -- record-breaking storms, deadly terror attacks, thousands of migrants disappearing beneath the waves and openly supremacist movements rising. Are we responding with the urgency that these overlapping crises demand from us? Journalist and activist Naomi Klein studies how governments use large-scale...

Clay Shirky looks at "cognitive surplus" -- the shared, online work we do with our spare brain cycles. While we're busy editing Wikipedia, posting to Ushahidi (and yes, making LOLcats), we're building a better, more cooperative world.

Talking at the US State Department this summer, Hans Rosling uses his fascinating data-bubble software to burst myths about the developing world. Look for new analysis on China and the post-bailout world, mixed with classic data shows.