Cattle farmers claim grass-fed beef can be carbon neutral. But less than 3 percent of cows are raised this way.
Oklahoma cows belch out about a half-pound of methane daily.
Methane is a powerful greenhouse gas and researchers around the world are finding innovative ways to cut the amount of the gas emitted by cows raised for meat and dairy production.
This morning, TransCanada is suing the Obama administration for blocking the Keystone XL oil pipeline, French police are investigating a suspected terrorist attack in Paris, a weed activists sends pot to Canada's MPs, and more.
New White House rules focused on cutting methane emissions are the last big chance for the president to cement his legacy on climate change.