'True grit' erodes assumptions about evolution

Dining on field grasses would be ruinous to human teeth, but mammals such as horses, rhinos and gazelles evolved long, strong teeth that are up to the task.

Savanna study highlights African fuelwood crisis

(Phys.org)—The dwindling reserves of fuelwood in Africa have been illuminated in a new study published today, which shows a bleak outlook for supplies across savannas in South Africa.

Zimbabwe weighs cost of too many elephants

A herd of elephants hobbles past a cluster of acacia trees to a water-hole deep in Zimbabwe's vast Hwange game reserve, attracted by the drone of generators pumping water round the clock into the pool.

Out of Africa and Into the American Midwest

Grasses bend in the wind, their golden tips tracing arcs across fields that stretch toward the horizon. Sunwashed by a fading evening light, these reedy ballet dancers are central figures in savanna, an ecosystem that covers ...

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