The new study sought to discover the answer to this.

VOA: special.2009.06.09

The study set out to discover Taino roots and from there establish connection to other indigenous groups in other parts of the Americas (such as the Yanomamo).

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The authors say the study is the first of its kind to try to discover the extent of abuse, and attempted abuse, of children by strangers.

BBC: 'Stranger danger' highlighted

The discover section of the site provides an insight into the science behind the study of Leonardo's work, including explanations and images of infra-red, ultra-violet and my favourite, the "computed axial tomography" of some of da Vinci's work.

BBC: 8bitpeoples