Joe Lassiter is a deep thinker and straight talker focused on developing clean, secure and carbon-neutral supplies of reliable, low-cost energy. His analysis of the world's energy realities puts a powerful lens on the stubbornly touchy...

Energy poverty, or the lack of access to electricity and other basic energy services, affects nearly two-thirds of Sub-Saharan Africa. As the region's population continues to increase, so will the need to build a new energy system to...

TED Fellow Nighat Dad studies online harassment, especially as it relates to patriarchal cultures like the one in her small village in Pakistan. She tells the story of how she set up Pakistan's first cyber harassment helpline, offering...

To fight climate change, we need to clean up the global electricity system by replacing fossil fuel power plants with clean generation -- right? Climate author Solomon Goldstein-Rose thinks we need to do much more than that. Replacement...

Thousands of languages thrive across the globe, yet modern speech technology -- with all of its benefits -- supports just over a hundred. Computational linguist Kalika Bali dreams of a day when technology acts as a bridge instead of a...

What if you never had to fill out paperwork again? In Estonia, this is a reality: citizens conduct nearly all public services online, from starting a business to voting from their laptops, thanks to the nation's ambitious post-Soviet...

It may sometimes seem like things are getting worse, but there's lots of reasons to be optimistic about the future. More people have access to toilets and sanitation than ever before. Thanks to public health improvements like this, since...

If you're undergoing surgery, you want the best surgical team to collaborate on your case, no matter where they are. Surgeon and entrepreneur Nadine Hachach-Haram is developing a new system that helps surgeons operate together and train...

What can you do when the wheels of justice don't turn fast enough? Or when they don't turn at all? Vivek Maru is working to transform the relationship between people and law, turning law from an abstraction or threat into something that...

Five billion people can't use the internet. Aleph Molinari empowers digitally excluded people, by giving them access to computers and sharing the know-how to use them.

How can cities help save the future? Alex Steffen shows some cool neighborhood-based green projects that expand our access to things we want and need -- while reducing the time we spend in cars.

Every minute, 20 people are newly displaced by climate change, economic crisis and political instability, according to the UNHCR. How can we help them overcome the barriers to starting new lives? TED Resident Muhammed Idris is leading a...

Hooray for technology! It makes everything better for everyone!! Right? Well, no. When a new technology, like ebooks or health trackers, is only available to some people, it has unintended consequences for all of us. Jon Gosier, a TED...

There is a mind-boggling amount of data floating around our society. Physicists at CERN have been pondering how to store and share their ever more massive data for decades - stimulating globalization of the internet along the way, whilst...

In 2000, the UN laid out 8 goals to make the world better by reducing poverty and disease -- with a deadline of 2015. As that deadline approaches, Jamie Drummond of ONE.org runs down the surprising successes of the 8 Millennium...

A blank spot on a digital map can signal much more than a gap in data -- it can mean something is being intentionally hidden. Sharing the remarkable discovery of massive alleged detention camps in Xinjiang, China, Pulitzer Prize-winning...

An effective COVID-19 vaccine is just the first step in ending the pandemic, says global health strategist Johanna Benesty. In this illuminating talk, she explores the various barriers to "equitable access" -- making sure COVID-19...

Could someone hack your pacemaker? Avi Rubin shows how hackers are compromising cars, smartphones and medical devices, and warns us about the dangers of an increasingly hack-able world.

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Warning: This talk might contain much more than you'd ever want to know about the way the world poops. But as...

TeD Fellow Zubaida Bai works with medical professionals, midwives and mothers to bring dignity and low-cost interventions to women's health care. In this quick, inspiring talk, she presents her clean birth kit in a purse, which contains...

Refrigerators do much more than store your groceries -- they're also vital to preserving and distributing vaccines. Illustrating the realities of (and threats to) global vaccine supply chains, technologist and TED Fellow Nithya...

Solar-powered LED lightbulbs could transform the lives of rural Haitians, but as Daniel Schnitzer found, they don't simply sell themselves. At TEDxPittsburgh, he shows how smart health and energy products for the developing world are...

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.

Devastating vulnerabilities are hiding in the technology in programs, protocols, and hardware all around us. Most of the time, you can find ways to protect yourself.