Originally posted on TED Blog:

Connected-Getty-ImagesTake a step back and consider the exquisite network of systems that sustain life on Planet Earth. The air we breathe, the food we eat and the ground we walk on are all carefully regulated by natural systems in an intertwined dance — which means that any change we make in our environment can set off a chain of unexpected reactions. In this week’s TED Radio Hour, four speakers discuss the delicate balance of nature and offer up bold ideas for restoring equilibrium.

The episode kicks off with an inspiring call to action by environmentalist George Monbiot, who wants to reintroduce missing species to their natural habitats. In his talk from TEDGlobal 2013, he shares the story of the wolves in Yellowstone Park, whose populations had dwindled, leading to an overpopulation of deer. When wolves were reintroduced, the natural balance was reset: vegetation returned to normal; bear…

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