Seaweed sucks large amounts of carbon out of the air as it grows—and some species grow two feet per day. It’s estimated that 173 million metric tons of carbon are absorbed by seaweed every year—which is about the annual emissions of the entire state of New York. While these are early estimates, we know that the more seaweed we grow and harvest sustainably, the more carbon we can take out of the air. What’s even wilder? There’s a growing body of evidence that suggests that a bit of red seaweed sprinkled into cattle feed reduces methane from cow burps by over 80%.