By Richard Black
Environment correspondent, BBC News
The area of the world's farmland used for growing genetically modified crops increased by about 10% last year.
GM use grew fastest in Brazil but fell in the EU, says the International Service for the Acquisition of Agri-biotech Applications (ISAAA).
Virtually all GM strains used were engineered for just two traits, disease resistance and herbicide tolerance.
ISAAA is an organisation partly funded by industry that promotes biotechnology as a path to sustainability.
It calculates that more than a billion hectares have been cultivated with GM crops since their introduction in 1996 - the figure derived by adding together the areas cultivated with these varieties in all of the intervening years.
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more:
http://www.bbc.co.uk/news/science-environment-12541465