Study: Dinosaurs were charbroiled after Chicxulub impact

New research says the Chicxulub asteroid impact likely sent lethal heat and radiation across Earth.

Scientists combined impact simulations with geologic evidence and found fine dust may have intensified atmospheric heating far beyond earlier estimates.

The extreme heat could have killed many organisms outright and helped ignite widespread wildfires.

The findings refine the leading explanation for the dinosaur extinction at the end of the Cretaceous.