The Natural Materials That Could Replace Environmentally Harmful Plastics

'The BBC has an article detailing new efforts to replace plastics used in products and construction with newer, less environmentally harmful alternative materials,' writes Slashdot reader dryriver. The new products mentioned in the report include: Stone Wool: To transform one of the world's most abundant resources into something with utility and sustainability takes a special kind of alchemy. Stone wool comes from natural igneous rock -- the kind that forms after lava cools -- and a steelmaking byproduct called slag; these substances are melted together and spun into fibers, a little like candyfloss. Mycotecture: Mushrooms aren't just a flavor-packed addition to ravioli or ragu (or a sparkplug to the occasional psychedelic adventure); soon, tree-hugging fungi and forest-floor toadstools may replace materials like polystyrene, protective packaging, insulation, acoustic insulation, furniture, aquatic materials and even leather goods. Urine Bricks: Cement, concrete's primary ingredient, accounts for about 5% of the world's carbon dioxide emissions. Researchers and engineers are working to develop less energy-intensive alternatives, including bricks made with leftover brewery grains, concrete modeled after ancient Roman breakwaters (Romans made concrete by mixing lime and volcanic rock to form mortar, a highly stable material), and bricks made of, well, urine. As part of his thesis project, Edinburgh College of Art student Peter Trimble was working on an exhibit that was supposed to feature a module on sustainability. Almost by accident, he created 'Biostone': a mixture of sand (incidentally, one of Earth's most abundant resources), nutrients, and urea -- a chemical found in human urine. A greener particleboard: Despite what it sounds like, particleboard -- those rigid panels made of compressed and veneered wood chips and resin used in furniture and kitchen cabinetry throughout the world -- hasn't actually a place in the green-building pantheon. That's because the glue that binds particleboard's wood fibers traditionally contain formaldehyde, a colorless, flammable, strong-smelling chemical and known respiratory irritant and carcinogen. That means your faux-wood Ikea shelf is quietly 'off-gassing' toxins into the air. One company, NU Green, created a material made from 100% pre-consumer recycled or recovered wood fibre called 'Uniboard.' Uniboard saves trees and avoids landfill, while also generating far fewer greenhouse gases than traditional particleboard, and contains no toxins. That's because Uniboard has pioneered the use of renewable fibers like corn stalks and hops, as well as no added formaldehyde (NAF) resin instead of glue.

Read more of this story at Slashdot.