OCW
Why Iceland's lava is so hard to control
In December 2023, Icelandic citizens experienced their worst nightmare: a volcanic fissure opened and began spewing lava fountains 100 meters tall. While the molten rock narrowly avoided a small town, Iceland wasn’t willing to leave anyone's fate to chance again and began preparing for future..
TED
The controversial climate tool funding real change
If a company plants trees to offset its pollution, is that climate progress — or is it greenwashing? Critics of carbon markets say it’s the latter. But Sandeep Roy Choudhury, who’s spent two decades financing climate projects from rural cookstoves to coastal forests, says the real failure is d..
TED
The story you're not hearing about AI data centers
The race to build smarter AI is crashing into a physical limitation: the power grid simply can't keep up with the energy demands of data centers. Computer scientist Ayșe Coskun shows how we could turn this problem on its head, transforming AI facilities into virtual batteries that help stabili..
TED
The language you're fluent in — but forgot how to hear
What if the calm you feel when you hear birdsong isn't a coincidence, but ancient evolutionary wiring ... a signal that once meant safety? Musical ecologist and rapper Louis VI says humans are hardwired to nature's sonic language, but modern life has drowned it out. He explores how we can ..
TED
How to power the world 24/7 — without oil
Deep beneath the Earth sits 50,000 times more energy than all the world's fossil fuel reserves, but accessing it requires using the same controversial technology that oil companies spent trillions to develop: fracking. Cindy Taff left Shell to prove that drilling for geothermal heat instead of ..
TED
