Andrew Sugden

A new wave of forest clearance is now spreading across eastern Amazonia, driven partly by the European preference for non-GM soya. Siberian forests, meanwhile, are being released from Russian state control into private ownership, raising the prospect of unregulated clear-felling for timber. Forests in the American west, Australia and Mediterranean Europe have burned extensively in summer...

The botany student’s textbook leaf, in anatomical cross-section, is a sandwich with two thick fillings packaged between thin outer envelopes. The outer layers – upper and lower epidermis – are each usually a single layer of cells, coated with a waxy hydrophobic cuticle. The fillings – the mesophyll – have an upper rank of vertically-oriented palisade cells,...