SAN FRANCISCO After four months, the worst wildfire season in California's modern history has finally come to an end. 9,639 fires have burned almost 4.4 million acres of land. More than 30 people were killed and over 10,000 buildings were destroyed. The worst of the fires was the August Complex in Northern California. Many of its 367 fires were started by thunderstorms on August 16 and 17. Over one million acres of land were burned. In September, about 14,000 firefighters…