California global warming opponents have a big beef with the dairy farming industry.

Gov. Jerry Brown signed legislation in September that, for the first time, regulates heat-trapping gases from livestock operations and landfills. 

But there's a problem. California is also the nation's leading agricultural state and farmers say the new law could severely challenge their businesses.

The California Air Resources Board is drawing up rules to implement the new regulations.

Take Two's A Martinez spoke with their science adviser Ryan McCarthy.

To hear the full conversation, click the blue player above.