OCW
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
The purity test that's killing clean energy
Why is it taking so long to finance the climate transition? After years working with the world's largest wealth funds and banks, finance innovator Riddhima Yadav has seen the same pattern: the climate movement is seeking perfection over progress, and starving the very industries that need to tr..
TED
The missing piece in climate action (it's not what you think)
When entrepreneur Yi Li cofounded Farmworks, she set out to build 1,000 climate-smart farms across Kenya, complete with dams, irrigation and organic fertilizers. The science was sound, but reality proved more complicated. Learn what she discovered about the missing ingredient behind failed climate s..
TED
Can you picture things in your mind? I can't
Picture this: a rocket ship crash-lands on a planet, and an alien approaches the spacecraft. What do you see in your mind when you visualize this scene? For Alex Rosenthal (and many others), the answer is: absolutely nothing. Exploring the fascinating science of aphantasia, or the inability to gener..
TED
The city that wasted nothing
400 years ago, Edo was on the verge of ecological collapse. Years of intense logging had led to massive deforestation and the city faced timber shortages, severe erosion, and frequent flooding. But over just a few decades, Edo became one of the most sustainable and efficient cities in history. So, h..
TED
How Japan saved its biggest city from collapse
400 years ago, Edo was on the verge of ecological collapse. Years of intense logging had led to massive deforestation and the city faced timber shortages, severe erosion, and frequent flooding. But over just a few decades, Edo became one of the most sustainable and efficient cities in history. So, h..
TED
