23/09/2025
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In Australia, scientists have found an unexpectedly powerful climate solution in seaweed β specifically, a red algae called *Asparagopsis*. When just a tiny amount of this seaweed is added to a cowβs daily feed, it reduces methane emissions from their digestive system by up to 80 percent. Since cows release methane primarily through burping, this one change transforms each breath into a quieter environmental footprint.
Methane is a greenhouse gas far more potent than carbon dioxide in the short term, and livestock contribute significantly to global methane output. By altering the fermentation process inside the cowβs stomach, the seaweed disrupts the production of methane without affecting the animalβs health or milk and meat quality.
Australian farms are now testing this method at scale, integrating seaweed farming into coastal regions as a new sustainable industry. These aquatic crops grow fast, require no fresh water, and absorb carbon while growing β offering double benefits for climate action.
Itβs a beautifully simple chain of change: ocean-grown algae feeds cows, cows burp less methane, and the air gets a little cleaner. All without building a single machine. In the face of climate change, sometimes natureβs own chemistry holds the quietest but most powerful solutions.