But what of deeper horizons? Dirk Wagner and colleagues ... representing a previously unknown deep biosphere under hyper-arid desert soils. The deep bacterial community possibly relies on gypsum ...

It's hard to imagine that global warming would have much effect on the world's already hot deserts. But even small changes in temperature or precipitation could drastically impact plants and ...

Here, the extreme dry sands of the desert meet the fertile silt-laden soils along the Nile—a river that provides a source of life for the entire nation and a good part of the African continent.