Extinction of Dinosaurs

Extinction of dinosaurs confirmed due to K-T event (Cretaceous-Tertiary Event) or the Chicxulub impact by an asteroid. Crater location is Mexico. Due to frreezing temperatures and 0 sunlight, autotrophs making food from sunlight died, and other organisms higher in the food chain died off due to hunger. If this event that occurred about 65million years ago did wipe out every living organism, there is no way humans evolved from scratch within 65million years based on the accepted theory of abiogenesis. Following the panspermia theory however, this can happen but panspermia is only a postulation, just like abiogenesis. Wiki's description of the event