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 meantimeTo 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 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 New Scientist – Home