Black swan events are rare and surprising occurrences that happen without notice and often wreak havoc on society. The metaphor has been used to describe banking collapses, devastating earthquakes and ...

Sometimes, the improbable happens. The stock market crashes. A big earthquake shakes a city. A nuclear power plant has a meltdown. These seemingly unpredictable, rare incidents — dubbed black swan ...

An Illinois parks department sought help from the community to find mates for two swans after they lost their companions. Residents responded. By Amanda Holpuch It all started with a sad black swan.

A new analysis is the first to document that "black swan" events also occur in animal populations and usually manifest as massive, unexpected die-offs. Black swan events are rare and surprising ...