OCW
Why are AI data centers using so much electricity?
Since 2019, over a thousand warehouse campuses have popped up around the world. Each complex covers nearly 100,000 square meters, uses as much water as a small town, and as much electricity as a small city. These are AI data centers — facilities for running and training Large Language Models like ..
TED
How to clean up the world's dirtiest industry
Climate strategist Joojin Kim spent years convincing banks across South Korea to stop funding coal, and it worked. Now he's aiming that same playbook at a new target: maritime shipping, a hidden engine of the global economy — and one of the world's dirtiest industries. He breaks down how..
TED
How to make AI companies pay your energy bill
Climate expert Ari Matusiak spends his days working to rewire America's energy system, and he has an idea: instead of tech companies building new power plants for their AI data centers, they should invest in energy-efficient upgrades to your home. He lays out how this swap could lower your powe..
TED
How to make learning impossibly fun
What if science class felt less like studying out of a textbook and more like an unforgettable field trip? From viral glitter-bomb traps to backyard engineering marvels, former-NASA-engineer-turned-YouTuber Mark Rober has spent years proving that curiosity is contagious — and that the best way to ..
TED
How do Maglev trains work?
To coincide with the 1964 Tokyo Olympics, Japan launched a groundbreaking bullet train that inspired countries around the world to invest in high-speed rail. Today, high-speed trains regularly travel at over 300 km/h, on par with the take-off speed of a commercial airplane. But can it ever be faster..
TED
Two wars, no clear exit plan. Now what?
Six months into a catastrophic war in Iran — and with no end in sight for the war in Ukraine — the world is embroiled in conflicts with no apparent exit plan. In this interview, political scientist and Eurasia Group founder Ian Bremmer breaks down what these wars are costing people around the wo..
TED
