He tells WENN, "I try not to make it too loud but I have something called System of Rice Intensification that I'm involved with promoting.
"It's not just for rice but other crops and I've been going around the world on a grass roots level directly to the farmers, teaching a method of growing rice that uses 50 per cent less water and 90 per cent less seed, and yields four times as much rice.
"It's an incredible thing."
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