Why did T. Rex have such tiny arms? In this episode you'll meet paleontologist Elizabeth Steell, who's stepped into a decades-old dinosaur debate with a stunning new theory involving giant heads, evolutionary trade-offs, and some serious math. Will it convince you? Listen and find out! 🎧 Listen to the Episode 🦖What Kids Will Learn Why T. Rex had such tiny arms — and how evolution can trade off one body part to build up another. How scientists use math to test theories about