Could we breed cows that emit less methane?

Reducing methane emissions from livestock would benefit farmers and the environment. In a first step towards breeding low-methane-emitting cows, researchers from the University of Pennsylvania School of Veterinary Medicine ...

Exploring how community-based social norms evolve

Cooperation is a guiding principle of everyday life. It's as simple as following the rules of the road when driving or holding a door for a stranger; cooperation is a fundamental aspect of human societies and has long intrigued ...

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