Mexican designer Milú Brunell has designed Soli, a prototype for a soil-powered lamp that can be planted into the ground. More about Milú Brunell creates Soli garden light to be powered by soil
British engineering firm Rolls-Royce has laid out how it will achieve net-zero carbon emissions by 2050, including modifying its jet engines to run on renewable fuels. More about Rolls-Royce sets out plans to decarbonise aviation engines as part of net-zero drive
News: the world's first building to be powered entirely by algae is being piloted in Hamburg, Germany, by engineering firm Arup. More about Arup unveils world's first algae-powered building
Belgian architect Vincent Callebaut has designed a conceptual transport system that would involve airships powered by seaweed. More about Hydrogenase by Vincent Callebaut
Boston architects Howeler + Yoon and Los Angeles digital designers Squared Design Lab have designed a conceptual structure for Boston, where an unfinished building would be covered in modular pods growing algae for biofuel. More about Eco-pods by Howeler + Yoon Architectureand Squared Design Lab