Are We Pushing the Planet to the Brink of Irreversible Environmental Change?

Roughly 10,000 years ago, the great sheets of ice that had covered much of the planet receded, triggering a wave of extinctions, ecological changes and, ultimately, the rise of human civilization . All those changes came about as roughly 30 percent of the planet's surface went from ice-covered to ice-free

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Are We Pushing the Planet to the Brink of Irreversible Environmental Change?