By Evan Gover, National Geographic Intern National Geographic Explorers are experts in their respective fields, trailblazers whose innovative ideas and accomplishments are making a significant difference in the world.   2014 Emerging Explorer Tristram Stuart is a renowned activist waging a worldwide war against food waste. Read more about his “Pig Idea” for saving the planet below! Tristram has devoted his life to addressing the … Continue reading One Man’s Compost is This Man’s Lunch