One of the most powerful weapons in the fight against climate change is washing up on shorelines around the world, unnoticed by most beachgoers. It’s seaweed. Specifically, Asparagopsis taxiformis and Asparagopsis armata — two species of a crimson submarine grass that drifts on waves and tides all around the world’s oceans. See how seaweed is being researched as a feed additive to reduce methane production in livestock.