Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. What did the T. rex use its little arms for? – ...

A new study has found that the T. rex's arms evolved to become smaller at the same time as its head grew to catch more prey Researchers found T. rex arms shrank as their skulls grew larger, ...

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For decades, the disproportionately small forelimbs of Tyrannosaurus rex have been one of paleontology's most debated anatomical puzzles. A new biomechanical hypothesis published by researchers offers ...