How Can You Reduce Methane Burps?

Ermias Cabraub is a professor at UC Davis where he studies cows, specifically a problem with cows. Those burps are full of methane, one of the greenhouse gases that contributes to climate change. In fact, cows account for 4% of US greenhouse gas emissions every year. For the past several years, Ermias and his team have been experimenting with how changing a cow's diet could safely and quickly lower the amount of methane in its belches.