| 1. | He helped analyze the radiocarbon data and wrote the Nature paper.
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| 2. | Radiocarbon analysis established they were about 1, 000 years old.
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| 3. | The spread in the radiocarbon dating indicates at least two possibilities.
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| 4. | No organic material was found, so radiocarbon dating was impossible.
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| 5. | The FBI used radiocarbon dating to determine the anthrax was fresh.
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| 6. | Radiocarbon dating evidences human presence dating back 50, 000 years.
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| 7. | Wood from the foundation was radiocarbon-dated to about 880.
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| 8. | It last erupted in about 350 BCE based on radiocarbon dating.
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| 9. | A detailed analysis using radiocarbon dating techniques was published in 2007.
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| 10. | A shell sample yielded a calibrated radiocarbon date of 300 to 490
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