Tree planting in the driest place on earth; Ica Valley, Peru; 4/20/09

Tree planting in the driest place on Earth BBC News - UK
While the plight of the world's rainforests are well known, the same cannot be said of tropical dry forests. These less biodiverse, but equally remarkable forests, face threats every bit as severe as their better known cousins.
The Atacama dry forest "is really an ecosystem on its last legs," says Mr Whaley, of London's Kew Gardens - an internationally renowned botanical research institution.
The tree under threat is the huarango, Prosopis limensis, found only in the Ica region of Peru.