OCW
How scientists are creating real-life invisibility cloaks
A spy presses a button on their suit and blinks out of sight. A wizard wraps himself in a cloak and disappears. A star pilot flicks a switch, and their ship vanishes into space. Invisibility is one of the most tantalizing powers in fiction, spanning all kinds of stories. But could this fantasy ever ..
TED
디지털그래픽제작및교육활용
KOCW Korea Open Course Ware
동역학
KOCW Korea Open Course Ware
Your empty wine bottle could help rebuild coastlines
What if you could take something as tiny as a grain of sand — and as common as a glass bottle — and use it to tackle the climate crisis? Waste alchemist Franziska Trautmann shares how the spark of an idea turned into a large-scale operation helping restore the eroded shores of Louisiana and beyo..
TED
This refrigerator is saving lives
TED Fellow and renewable energy expert Norah Magero envisions an Africa that pioneers its own technological future, shifting the narrative from dependence and consumption to self-reliance and innovation. She shares how she developed VacciBox — a solar-powered refrigeration system made in Kenya to ..
TED
The thing in your kitchen most likely to kill you
Between 2011 and 2022, the deadliest kitchen appliances in the US were ovens and ranges; taking lives by causing fires and leaking carbon monoxide. These kinds of sudden, catastrophic fatalities are thankfully rare. But the kitchen dangers that cause the most casualties may actually be less immediat..
TED
