Igbo-American Chinyere “Chichi” Ukeje, 25, won NASA’s $300,000 [397.38 million] prize by engineering a system to feed astronauts on Mars, no small feat for a planet with zero grocery stores. Her innovation tackles food production in deep space, where resupply missions are impossible. Pursuing a master's degree in computer science at Johns Hopkins University, she engineered a bioreactor that transforms refuse into nourishment for Mars missions. Ukeje's innovation brings us closer to a future where Mars colonists grow their own food.