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After Dinosaurs, Mammals Put Brawn Over Brains
In the 10 million years following the dinosaur die-out, mammals bulked up, rather than evolving bigger brains, to adapt.
Research posts
Ancient Fossils Suggest How Giraffes Evolved Long Necks
New study of 17-million-year-old fossils shows that head-butting battles likely played important role in giraffe evolution.