The creation of new organisms for agriculture and medicine could have unforeseen ecological side-effects, he suggests.

BBC: How are humans going to become extinct?

About major causes of hunger like incompetent politics in some developing countries, the lack of family planning, the big ecological footprints of us Westerners, and the agriculture politics and trade politics of the West - not a single word.

BBC: Getting an appetite for biotechnology

Through their livelihoods based on slash and burn agriculture, fishing and hunting, they have both shaped the local ecological system and sheltered it from destruction.

UNESCO: EDUCATION