"There is very little about farming that's natural," Mack said.
"Farming's been around for 10,000 years and a lot of farming has been trying to keep the pests, however you do that, off the farm," Mack continued
"As you get land grown more intensively, pest resistance is going to rise," Mack said. "How can you have a multiplicity of tools... to treat the pests who want to have a go at that crop?"
Mack called GMOs "a tool from the tool box, it is progressive."
See Mack's interview above, and read more from Davos below: