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Vincent volcano has such a deadly reputation. Science Coronavirus Coverage How this more contagious virus variant became dominant in the U. Coronavirus Coverage Does everyone need to wear a mask outside? Experts weigh in. Science Gory Details Parasites are going extinct. Here's why we need to save them. Travel Planet Possible What happens to street cats when tourists suddenly disappear?

Travel How to save a lighthouse? Sleep in one. Travel Book Club These are the worst trips in the world. Travel This U. Travel Volcano tourism is booming, but is it too risky? Subscriber Exclusive Content. Why are people so dang obsessed with Mars? How viruses shape our world.

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Britannica Quiz. Archaeology: Great Discoveries Quiz. What is the name of the largest religious structure in the world? Who is considered the father of Egyptian archaeology? Test your knowledge. Take the quiz. Learn More in these related Britannica articles:. The occurrence of natural radioactive carbon in the atmosphere provides a unique opportunity to date organic materials as old as roughly 60, years. Unlike most isotopic dating methods, the conventional carbon dating technique is not based on counting daughter….

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