Science can help design strategies to tackle malnutrition. The challenge is turning this knowledge into action.

A healthy diet is more than just calories. Priya Shetty gets the figures on the cost of poor nutrition — and the scale of the challenge.

GM crops were supposed to rescue the world's one billion undernourished people. Carol Campbell discusses whether they will ever curb hunger.

Developing countries urgently need nutritional interventions to safeguard vulnerable people during economic crises, writes Suresh Babu.

Understanding how carbon dioxide impacts food quality is vital to tackle malnutrition effectively, says agricultural researcher Lewis Ziska.

Micronutrients help fight disease — it's time to turn knowledge into action, say nutrition researchers Andrew Thorne-Lyman and Wafaie Fawzi.

We must focus on food safety as well as nutrition to feed the hungry — but there are many barriers to safe eating, writes the WHO's Jørgen Schlundt.

Jim Kaput explains why efforts to tackle malnutrition should consider nutrigenomics — the interplay between food and genetic make-up.

Nutritional interventions can improve health, save lives and boost economic growth but only if implemented before the age of two.