Animals
Dinosaurs are still alive. Today, we call them birds
Birds don’t look like the scaly giants of Jurassic World. But fossils are revealing how these modern-day dinosaurs descended from ancient reptiles.
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Chemistry
Scientists Say: Nucleosynthesis
For this nuclei-forging cosmic process, the Big Bang was just a way to get started.
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Earth
Analyze This: Smartphone data may help improve GPS
Data from millions of phones helped fill in maps of the ionosphere, an atmospheric layer that can muddle radio signals key for navigation systems.
Explainers
Animals
What is a dinosaur?
Scientists have named more than 1,000 species of nonavian dinosaurs. Their legacy lives on in the 11,000-plus bird species alive today.
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Measles
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Giant rat border agents could help put a stop to wildlife poaching
African giant pouched rats have been trained to ferret out elephant ivory, pangolin scales and more. They could be put to work preventing smuggling.
