This supplement can reduce methane in cows and make farmers money

Startup Mootral says its garlic-based feed supplement helps to reduce a cow's methane emissions. These reductions are being converted into carbon credits.

A big chunk comes from the methane cows emit, but a new feed supplement could reduce those emissions by an average of 30%, according to its makers. If all the world's cows ate the supplement, the reduction in emissions could be equivalent to taking more than 300 million cars off Europe's roads. Developed by Swiss-British startup Mootral, the supplement, based on garlic and citrus extracts, is mixed with regular cattle feed, reducing methane emissions by the equivalent of around one ton of carbon dioxide per cow per year.