Fire affects an estimated four million square kilometres of Earth’s land each year and is responsible for releasing aerosols and greenhouse gases to the atmosphere. Understanding the influence that this has on atmospheric chemistry and representing these emissions in future climate predictions is, however, complex and remains poorly understood. To improve the situation, a team of scientists working as part of ESA’s Climate Change Initiative is using satellite observations, such as from Copernicus Sentinel-3, to gain a global view of land burned by fire.