A group of young graduates from the University of Chicago are tackling malnutrition in Guatemala in a way that might surprise you: encouraging locals to eat more worms. But as it turns out, they're not the only ones who see eating insects as a sensible and sustainable way of ensuring adecuate nutrition in an densely-populated world.

Millions of people across India suffer from an iodine deficiency, which can cause serious and irreversible – and ultimately preventable – health problems. Pregnant women are particularly vulnerable. So what can be done to reach out to a country with 500 million women? A simple initiative, recently tested in rural India, may offer a solution: the Life Saving Dot.

Despite running the world’s largest child nutrition program, nearly half of India’s young are malnourished.