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Environment

Cutting back on our use of energy and materials so that we live within Earth’s means can seem like an insurmountable challenge. But after a decade grappling with these problems, a historic Portuguese city is beginning to walk this tightrope

Environment

Humans

Environment

Environment

Environment

Environment

Environment

Environment

Environment

To avoid the worst effects of climate change, the world must balance carbon emissions with carbon sinks by 2050. But even if we hit the target, a lot depends on how much we emit in the meantime

Environment

Environment

Environment

Environment