A new space race? China adds urgency to US return to moon

It's not just rocket fuel propelling America's first moonshot after a half-century lull. Strategic rivalry with China's ambitious space program is helping drive NASA's effort to get back into space in a bigger way, as both ...

Urban crops can have higher yields than conventional farming

As urban populations boom, urban agriculture is increasingly looked to as a local food source and a way to help combat inequitable food access. But little is known about how productive urban agriculture is compared to conventional, ...

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