Carbon

Sometime in the 1800s, long after the Persians had beaten back the Crusaders, the technique for making the mighty swords that won those battles was mysteriously lost. In the centuries that followed, Europe’s best metallurgists repeatedly tried to revive this craft, with no luck. Then, in the 1980s, a lone horseshoer in Florida named Al Pendray started tinkering with steel recipes. A Craftsmanship mini-documentary

The carbon trading market is heating up again, and a lot of people who have been figuring out ways to grab carbon dioxide out of the air are back in the game. California’s John Wick may well be at the head of the pack.