According to the World Bank, over 1.1 billion people have lifted themselves from extreme poverty since 1990. But even as the global outlook on extreme poverty improves, billions of people continue to struggle to access basic human needs, like water, food, shelter, health care and energy. In response to these challenges, innovators around the world have developed a preponderance of cost-effective, locally implemented solutions, from solar lanterns and water filters to improved cookstoves and refugee shelters.