Dinosaur extinction: Belgian researchers reveal new groundbreaking discovery

New research out of Belgium is changing the understanding of what caused the extinction of dinosaurs.

Scientists from Belgium recently explored a fossil site in North Dakota, called Tanis, which records the geological effects of the massive Chicxulub asteroid that hit Earth 66 million years ago.

The asteroid is believed to have caused the dinosaurs' mass extinction, but the scientists from Belgium found a layer of ultrafine silicate dust at the site and suggest that it wasn't just the asteroid that killed them off.

Heidi Petracek reports.

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