Three-quarters of the humans now stumbling across the planet are circulating within their own borders. New middle classes are being born. Old political dynasties are tottering. Megacities are exploding—and imploding. Stunning innovations collide with colossal disappointments. Entire systems of knowledge (traditional farming), accumulated over millennia, are being jettisoned. Urbanization is cracking apart old gender and religious norms. Environmental resources are in free fall. Chaos, longing, violence, hope, tearing down, building up, experimentation, astonishing successes and defeats.
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