In the vast golden grasslands of sub-Saharan Africa, the secretary bird makes an unforgettable sight — long-legged, crested, and stalking the savanna with deliberate, high-stepping precision. Famous ...

The Amazon rainforest gets all the attention, but the neighboring cerrado stores massive amounts of carbon in its peaty soils ...

Africa is a source of uncertainty in carbon cycle calculations. By some estimates, the continent's landscapes emit 2.1 billion tons more carbon dioxide than they take up each year—about equal to 1.5 ...

The Amazon’s “tipping point” refers to the transition of the rainforest into a drier, savanna ecosystem. The rainforest’s ecological balance depends on the transport and recycling of moisture, but ...