Related topics: blood vessels · cells

What's warming the cold-blooded iguana?

Now that dinosaurs no longer roam the Earth, scientists use modern animals to understand how their ancient ancestors reproduced, walked, and even how they regulated their body temperature. While researchers continue to debate ...

Solving a hairy forensic problem

For decades, forensic scientists have tested strands of hair to reveal drug use or poisoning. But in recent years, reports have questioned the technique—in particular, its ability to distinguish between the intake of a ...

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