
This landscape of African savannah is grass-swept and evolutionarily recent
Arte Index/istockphoto/Getty Images
sleeping beauty
Andreas Wagner (oneworld publications)
The grass of the world has long waited for a day in the sun. They evolved during the late Cretaceous period, shortly before the extinction of the dinosaurs. But for tens of millions of years they were rare. It is relatively recent that parts of the globe have been dominated by vast grasslands.
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