People in many developing countries suffer from malnutrition. One solution? According to the startup Nannofood, we should teach them to farm algae. Popular Science host Katie Linendoll caught up with Nannofood founder and CEO Zach Gambill at the 2015 Kairos Global Summit to learn what makes algae such a good source of nutrition—and how to use it in a meal.

Popular Science tracked down ground-breaking startups at the Kairos Global Summit. Check out our complete coverage here. You can hear more from Katie on her podcast.