Agreed. Methane release is an enormous local/regional problem. While increasing acidity in ocean waters is a global problem because it is happening in all ocean waters. The article that you and I are responding to is claiming that methane release will forever alter human civilization as we know it. This is not science but agenda-driven fear mongering to goad people into rattling the cages of decision-makers to regulate the burning of fossil fuels. The author raises despair, give it up, and this stops people from doing anything constructive. From 1999 to 2008 world livestock populations increased by 70%. During this same period atmospheric methane did not increase. The connection between methane release by cattle and climate change has never been observed, only theorized.