David Attenborough: New asteroid evidence provides ‘moment of justification’

 David Attenborough looks at fossilised Triceratops skin through a magnifying glass (BBC/PA)

David Attenborough has said new evidence that emerged during filming for his new documentary about the last day of the dinosaurs prompted “a moment of justification”.

The broadcaster and naturalist’s latest project highlights fossilised remains of a Thescelosaurus believed by scientists to have been killed by the Chicxulub asteroid 66 million years ago.