With 14 projects under his belt, author and serial self builder David Snell explains how you can stop costs from running away from you.

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Award-winning Cork House was the world's first to use a solid cork construction system. Matthew Barnett Howland explains the concept and how he managed to build it himself.

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Architect Paloma Gormley of Practice Architecture explains how versatile hemp can be as a building material, and how plastic use can be reduced on site.

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Skipper and oceans advocate Emily Penn explains the damage that plastic pollution is having on our oceans, and how we can find solutions.

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