'It's not like CSI': The science of the search for Richard III

DNA testing, environmental sampling and radiocarbon dating are some of the tests being undertaken to determine whether the skeleton found in Leicester was once Richard III - and there are also plans to do a facial reconstruction.

Determining toothpaste abrasion

There are various types of toothpaste available on the market. They come as pastes and gels, there are some that guard against tooth decay or protect teeth from acid attack, others that are designed for sensitive teeth. But ...

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