RT Dr. Clayton Forrester (@DrClaytonForre1)The Romans built the Pantheon out of concrete in 126 A.D. and it still looks like new. Modern concrete is inferior. https://t.co/NMDbl1kkzF ...

What do you do. What do pebble do. >> We turn concrete into a material that can store CO2 forever.And concrete is I don't know if you know this, but it's the second most used material in the world. >> We use a lot. >> We use a lot of it. >> And we need to use a lot more in the future.>> That's right. So, the more we build, the more we'll pollute unless we can turn into a carbon sink and therefore do >> do good by building more. In concrete, you have three main solid ingredients.>> Yeah. You have cement, whi ...