Radiocarbon dating of fossils taken from caves on islands along southeastern Alaska's coast suggest that at least a portion of the area was remaining ice-free during the last ice age.

从阿拉斯加东南海岸岛屿的洞穴中提取的化石的放射性碳年代测定法表明，在最后一个冰河时代，该地区至少有一部分保持无冰状态。

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Radiocarbon dating showed that the head's age matched the king's date of death.

放射性碳显示这个头颅的年龄符合国王的死期。

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The shroud was also damaged by a fire in the late Middle Ages which could have added carbon material, resulting in a higher radiocarbon content and a later calculated age.

这块裹尸布在中世纪后期遭到火灾破坏，也可能会增加另外的碳元素，这样会产生高放射性的碳素使计算的年代有所延迟。

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Radiocarbon dating found the skull was from the peak of the last Ice Age ruling out it was a cave bear, or a brown bear.

BBC: NEWS | UK | Scotland | Highlands and Islands | New tests on rare polar bear find

Using a combination of modern physics tools--including three-dimensional, high-resolution X-ray, radiocarbon dating with accelerator mass spectrometry, and infrared spectroscopy--the researchers analysed the tooth to determine the age and composition of a resinous filling detected inside.

UNESCO: Basic Sciences