Ancient World
What Was the Biggest Dinosaur Ever? Length, Weight and Debate
A thigh bone taller than a person, a cast too long for most museum halls and weight estimates that swing by tens of tonnes: how scientists size up the largest dinosaurs.
Tag: dinosaurs
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.