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How do you weigh a dinosaur? There are two ways, and it turns out...

The most emblematic feature of dinosaurs is their body size. Some dinosaurs reached enormous sizes during the Mesozoic Era which ended 66 million years...

Curious Kids: why can’t humans grow wings?

  Why can’t humans grow wings? Christina, age 9, Beijing, China. Hi Christina! Great question. Humans are animals that have backbones. This means we’re in a group...

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