A new report produced by Greenpeace suggests that a review of recent scientific literature underlines that the most effective strategy to adapt agriculture to climate change is to increase biodiversity. Food Security and Climate Change: The Answer is Biodiversity, goes on to state that a mix of different crops and varieties in one field is a proven and highly reliable farming method to increase resilience to erratic weather changes. The report further notes that the best way to increase stress tolerance in single varieties are modern breeding technologies that do not entail genetic engineering, such as marker assisted selection.