<p>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.</p><p>But the European building industry is also excited about his new, low carbon building mate ... Show More
Sep 1
Saving mothers and babies
In 2017, Spanish engineer Pablo Bergasa began an unusual hobby: to design a new incubator for use in African hospitals. Eight years on, he has sent 200 of his machines around the world, and he estimates they have saved the lives of 5,000 babies. Pablo’s incubator costs just a sma ... Show More
23m 16s
Nov 2023
Rammed earth: What is it and can it help tackle climate change?
Cement is said to be responsible for 8% of global carbon emissions. In the search for an alternative, more sustainable construction material, building companies in Ghana and other African countries are reviving an ancient technique called ‘rammed earth’. Daniel Dadzie, a BBC repo ... Show More
15m 32s
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
Dec 2023
A concrete solution to climate change
Concrete is one of the world’s biggest sources of carbon emissions. Tech companies, including a startup co-founded by former NBA star Rick Fox, are looking to change that.
This episode was produced by Hady Mawajdeh, edited by Matt Collette, fact-checked by Isabel Angell, engineer ... Show More
25m 53s