Concrete is so much more than just a sidewalk. We use it to build playgrounds and skateparks and even musical instruments! But how does it go from a powder to a sludge to the strong building material that we use all over the world? And can we come up with new recipes that are better for the environment?
To celebrate this superlative substance, Molly and coh ... Show More
Jul 14
Why are brains so squishy?
Our brains are amazing machines, but they are also very delicate. We have to wear helmets when we bike, skate, or do other activities where we might bang our skulls. Why is the brain so sensitive? Turns out, it’s a soft blob a lot like tofu, but that softness lets it do some pret ... Show More
34 m
Apr 2021
The material that could change the world... for a third time | TED-Ed
Today roads, sidewalks, bridges, and skyscrapers are made of a material called concrete. There's three tons of it for every person on Earth. It's also played a surprisingly large role in rising global temperatures over the last century. So, what exactly makes concrete problematic ... Show More
5m 43s
Jan 2021
How we could make carbon-negative concrete | Tom Schuler
Concrete is all around us: we use it to build our roads, buildings, bridges and much more. Yet over the last 2,000 years, the art of mixing cement and using it to bind concrete hasn't changed very much -- and it remains one of the world's biggest emitters of carbon. Entrepreneur ... Show More
5m 16s
May 2022
Turning mud into ‘clean’ concrete
A young scientist has developed a white powder which gives waste soil concrete-like properties. Gnanli Landrou grew up in Togo, helping his neighbours dry out soil to make bricks, and his big dream is to help people like them build stronger, cheaper, houses.But the European build ... Show More
24m 3s
