According to the World Meteorological Organization (WMO), June 2019 was Earth’s warmest June on record. Wildfires, producing plumes of smoke visible from space, are spreading in Siberia, Greenland, Alaska, and Canada as a result of lightning and high temperatures. Temperatures in Anchorage, Alaska reached 90 degrees for the first time on record and a total of 2.06 million acres were burned. Winds carrying smoke have caused air quality to plummet in cities in Siberia. Although Arctic fires are common between May and October, the intensity, scale, and duration make these fires unusual...