Ancient World
What Killed the Dinosaurs? The Asteroid Evidence Explained
A thin clay layer rich in iridium, a buried crater off Mexico and grains of shocked quartz: how scientists tied the end of the dinosaurs to one very bad day.
Space, Earth and the natural world, explained.
A thin clay layer rich in iridium, a buried crater off Mexico and grains of shocked quartz: how scientists tied the end of the dinosaurs to one very bad day.
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