TK A new startup is making the bold claim that it can mass-produce "Superwood," which it says is stronger and lighter than steel, with 90 percent lower carbon emissions compared to steel. If that sounds wild, it's because it is. InventWood, the company behind the material, claims its new product "has the capacity to substitute up to 80 percent of steel used globally," and "reduce greenhouse gas emissions by over 2 gigatons." On its website, InventWood claims that Superwood has up to 50 percent more strength compared to steel, has "minimal expansion and contraction," and a Class A fire rating […]