HUMANS, THE ONLY SPECIES TO EXTINGUISH ITSELF

Dinosaurs were extinguished by meteors
Humans have extinguished many species

However, Humans shall extinguish Humans:

Humans have tried to extinguish Humans by Ozone Depletion
Humans almost succeeded

Humans have tried to extinguish Humans by Global Warming
Humans are trying to abate Global Warming

Humans are stoking Regional Wars
Regional Wars shall become Global Wars

Global Wars shall result in Nuclear Wars
Humans shall be extinguished in a Global Nuclear War!