What's the issue with genetically modified plantlife?
Hundreds of genetically modified trees in Rotorua have been destroyed by apparent anti-GM protesters. 375 pine trees were planted last year as part of a herbicide resistance test, set to take eight years.
Some of the trees destroyed were not genetically engineered. The loss has set the research back by about a year, at a cost of about $400,000.
Miles Davis spoke to GE-Free NZ president Claire Bleakley, who denied the group was involved.
Why do concerns about genetic engineering exist?