February 27, 20171 min readHumans Start Most WildfiresPeople are responsible for much of the rising cost and ecological damage that wildfires imposeBy Amanda Montañez & Mark FischettiEnvironmentOn supporting science journalismIf you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today. Credit: Amanda Montañez (data visualizations), Mapping Specialists (ecoregion base map); Source: “Human-Started Wildfires Expand the Fire Niche across the United States,” by Jennifer K. Balch et al., in Proceedings of the National Academy of Sciences; February 27, 2017