Abstract Background California in the year 2020 experienced a record breaking number of large fires. Here, we place this and other recent years historical context by examining records fire events state back to 1860. Since drought is commonly associated with events, investigated relationship droughts over 160 period. Results This study shows that extreme such as seen are not unknown historically...

“Black Swans” andgroup decision making have become familiar terms in the relevant fileds. There been many Black Swan events history, such as current covid9 epidemic or failed launch of Challenger space shuttle 1986. In run-up to launch, NASA conducts a conference call. This contains typical group decision-making issues. As an example, through access information. Aboutexamine impact social and h...