Deep beneath your feet is a molten ball of energy the same temperature as the surface of the sun -- an immense clean energy source that could power the world thousands of times over, says technologist and climate activist Jamie C. Beard. How do we tap it? She lays out a surprising solution, and an unlikely alliance, to harvest geothermal energy from the Earth's core and get it to anywhere in the world.

The untapped energy source that could power the planet | Jamie C. Beard

Every weekday, TED Talks Daily brings you the latest talks in audio. Join host and journalist Elise Hu for thought-provoking ideas on every subject imaginable — from Artificial Intelligence to Zoology, and everything in between — given by the world's leading thinkers and creators. With TED Talks Daily, find some space in your day to change your perspectives, ignite your curiosity, and learn something new.

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Can cannabis actually treat insomnia? It's complicated, says sleep physiologist Jen Walsh. While the plant has been used across time and cultures, there's been little scientific research on how it impacts sleep disorders like insomnia. That's precisely where she and her team come in. Learn about the world's first study into the potential of medicinal cannabis as a safe, accessible treatment to help us all rest easy.

Can cannabis help you sleep? Here's the science | Jen Walsh

The convergence of AI and robotics will unlock a wonderful new world of possibilities in everyday life, says robotics and AI pioneer Daniela Rus. Diving into the way machines think, she reveals how "liquid networks" — a revolutionary class of AI that mimics the neural processes of simple organisms — could help intelligent machines process information more efficiently and give rise to "physical intelligence" that will enable AI to operate beyond digital confines and engage dynamically in the real world.

How AI will step off the screen and into the real world | Daniela Rus

What does it mean to be an active citizen? It's about more than just voting and paying taxes, says social entrepreneur Gabriel Marmentini. He explains why we can't rely on the state alone to solve all our problems — and presents the four key ingredients for anyone to become a change-maker and engage in solving public issues.

How to be an active citizen and spark change | Gabriel Marmentini

How can Israel and Palestine achieve peace? Palestinian peacemaker Aziz Abu Sarah and Israeli peacemaker Maoz Inon discuss the immeasurable tragedies they've experienced growing up in the region — and how they choose reconciliation over revenge, again and again. With a fierce belief in a better future, they talk about conflict, safety, finding shared values and how they're building a coalition of Israeli and Palestinian citizens who are intent on creating a path to hope and peace.

A Palestinian and an Israeli, face to face | Aziz Abu Sarah and Maoz Inon

It might sound like the plot of a movie, but economic crime is all around us — from drug trafficking and fraud to cybercrimes, tax evasion and more. Economic crime fighter Hanjo Seibert breaks down the complexities of money laundering and how we can all wield our collective power to dismantle the underworld economy and turn off the money tap for criminals.

The untapped energy source that could power the planet | Jamie C. Beard

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