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Researcher Mark Goodwin’s conclusion that a hollow base to an animal’s horn greatly diminishes its strength, and hence its utility in defense or dueling, begs for an engineering analysis. In tension, compression, and torsion about the axis of symmetry, most of the strength of a cylindrical structure comes from the walls, not the interior. If […]
- Paleontology
How did Triceratops grow its horns?
Newly discovered fossil skulls of juvenile Triceratops may help reveal how the dinosaurs grew their three trademark horns.
- Paleontology
Fossils found under tons of Kitty Litter
Excavations at North America's largest Kitter Litter mine have yielded fossils of ancient aquatic reptiles, as well as evidence of a tsunami generated by the extraterrestrial impact that killed off the dinosaurs about 65 million years ago.
