The value of developing new crop varieties with increased nutritional value should not be underestimated, argues Sherry Tanumihardjo.

Drought-tolerant crops have been developed for many years, but progress has been slow because breeders have focused too intently on yield.

GM crops have large benefits and pose no unique safety concerns, writes head of the Brazilian Biosafety Association, Leila Oda.

Biofortified crops are carefully selected to work for, not against, poor farmers, says Bonnie McClafferty from HarvestPlus.

Tackling micronutrient deficiencies isn't as simple as popping a few pills, says Michiel Korthals.

Indigenous and wild cassava species offer a cheap source of key nutrients, says Brazilian agriculturalist Nagib Nassar.

Journalists must corroborate anti-GM stories with scientists and regulators to avoid scaremongering, says Robert Wager.