Make a mould First you need to make a mould for your canoe -- a positive mould where the canoe is moulded over the outside, not in a hollow. Glue the foam cubes together to create a 1m x 1m x 4m block ...

In 2014, hundreds of Angelenos gathered downtown to watch more than 2,000 trucks pour concrete into a vast hole. During that event, Los Angeles set a world record: 80 million pounds of concrete were ...

The world gets a little greyer every year. According to a paper published in 2014 concrete—an aggregate material made by mixing cement, sand and gravel—is the second-most consumed substance in the ...

Many of the industrial processes underpinning modern civilization rely on dirty energy for the simple reason that it’s a great source of heat. To make steel, you need to smelt iron ore at 1,100 ...

Researchers have discovered how to make concrete from recycled glass - by turning it back into sand. A team from Australia were able to turn the waste into a replacement for industrial flooring - ...

Sustainability: News about the rapidly growing climate tech sector and other areas of innovation to protect our planet. SEE MORE by Lisa Stiffler on Jul 8, 2025 at 8:00 am July 8, 2025 at 3:36 pm Meng ...