Jonathan Watts, The Guardian

Outside the political hothouse of Brasilia, there are probably few who can name the head of Brazil's powerful agricultural lobby, yet the woman in question, Kátia Abreu, is rapidly becoming the country's most interesting, important – and dangerous – politician.

Rural workers say Juan Manuel Santos has failed to deliver on reform as armed troops, tanks and riot police sent into streets

Some 20,000 plant species from more than 100 countries and institutions will be added to the global seed bank in Norway

Government experiment reaches new heights as it attempts to regulate marijuana business and find alternative to war on drugs

Inhaling deeply from a large joint of unadulterated cannabis, Marcelo Vasquez grins at the imminent prospect of his outlawed passion becoming Uruguay's newest state-sanctioned industry.