Volunteer firefighter Mark Bezos tells a story of an act of heroism that didn't go quite as expected -- but that taught him a big lesson: Don't wait to be a hero.

Feeling safe is a human right -- but in many African countries, colonial-era laws make it dangerous for LGBTQIA+ people to gather and share their sexual orientation, gender identity or gender expression. Creating a space that leaves no room for discrimination, pan-African LGBTQIA+ advocate Okong'o Kinyanjui cofounded an online platform that give...

The combined market capitalization of Amazon, Apple, Facebook and Google is now equivalent to the GDP of India. How did these four companies come to infiltrate our lives so completely? In a spectacular rant, Scott Galloway shares insights and eye-opening stats about their dominance and motivation -- and what happens when a society prizes shareho...

In the US, people spend the overwhelming majority of their time inside buildings that burn fossil fuels, which are bad for both the environment and human health. (Think: breathing in air pollution from gas stoves, furnaces and water heaters.) If we're going to fix this problem, we need to retrofit millions of buildings with all-electric equipmen...

Witness the unveiling of Countdown, a major global campaign to cut greenhouse gas emissions. TED has partnered with scientists, policy makers, organizations, activists and more to create an initiative that everyone in the world can be part of. Check out http://countdown.ted.com to learn how you can get involved — and help turn the tide on climat...

In this special conversation, NYU marketing professor Scott Galloway and head of TED Chris Anderson dive deeper into Galloway’s explosive recent TED Talk, which has been seen by millions and ignited conversations about what he calls “the great intergenerational theft,” or how older generations are stealing prosperity from the young. With razor-s...