In a leaked draft of Pope Francis' environmental encyclical, he says global warming is a huge threat to life on Earth.
Whether it be starvation or obesity, the group says international commitment is needed.
The U.N. says better livestock feedin, breeding can curb gases by 30%.
The long theorized subatomic particle would explain why matter has mass.
Male guppies prefer to associate with their drab-colored counterparts when females are around.
