layers

Teeth act as a ‘faithful archive of life’ and form layers like tree rings

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Teeth act as a ‘faithful archive of life’ by forming layers like tree rings that reveal intimate details of a person’s life such as when they got pregnant, fell ill or were in prison Material called cementum in teeth develops a new microscopic layer every year   Lab analysis reveals it changes in shape and structure … Read more

Chinese investigate the dark side of the moon and finds three distinct layers

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Chinese rover is the first to investigate the dark side of the moon and finds three distinct layers after probing 131 feet below the lunar surface China’s Yutu-2 rover probed 131 feet below moon on its dark side Using radar, it found the moon’s ‘internal architecture’ consists of three layers The top consists of lunar … Read more