This week on Crystallise: Rosie tells us about the history of smallpox, and some new ancient Viking DNA research that sheds light on it's mysterious origins. In our SNPit, how to diagnose cancerous dinosaurs!

Read more about smallpox here:

• Vikings Had Smallpox and May Have Helped Spread the World's Deadliest Virus
• Smallpox Found in Lithuanian Mummy Could Rewrite Virus' History
• Mystery Solved: Scientists Now Know How Smallpox Kills
• How Smallpox Claimed it's Final Victim

Interested in diagnosing dinosaurs? Check out these articles!

• Doctors Diagnose Advanced Cancer - In a Dinosaur
• First Case of Osteosarcoma in a Dinosaur: a Multimodal Diagnosis

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Music:

AhDah Kevin MacLeod (incompetech.com)
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