Climate-heating emissions from wildfires in the European Union have surged to record levels this year as flames have engulfed over 1 million hectares of land – equal to 13 times the size of New York City – since January. Blazes sweeping through the continent – with major hotspots in Spain and Portugal – have so far released 38.37 million tonnes of carbon dioxide (CO2) emissions into the atmosphere, more than the annual CO2 emissions of Sweden, according to data from the European Forest Fire Information System (EFFIS). That’s more than double the average historical CO2 emissions recorded during the same months over the last 20 years. …Forests act as important carbon sinks, but when they burn, they release back into the atmosphere the carbon stored in the trunks, branches and leaves of their trees as well as in the soil. …Scientists have warned of the emergence of a ‘feedback loop’ between climate change and fires.