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
News: the world's first building to be powered entirely by algae is being piloted in Hamburg, Germany, by engineering firm Arup. More
Belgian architect Vincent Callebaut has designed a conceptual transport system that would involve airships powered by seaweed. More
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