NASA Explorers is a new digital series that takes you inside the space agency and follows the pioneers, risk-takers and experts at the front line of exploration. Earth is a planet marked by fire. Summer wildfires rage across the western United States and Canada, Australia and Europe. In early spring, agricultural fires blanket Southeast Asia and burn throughout the dry season in central and southern Africa and Brazil. Fire is a natural part of many ecosystems. In season 4 of NASA Explorers, “Fires,” join researchers from the Canadian Arctic to Southeast Asia studying fire and how it changes with the planet.