A parent who volunteered to be part of ITV Daybreak's investigation into what children would do if approached by a stranger said the results were a "rude awakening".
Natasha said she had not slept for two weeks since the experiment and has been much more vigilant.
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After decades of struggling negotiations both activists and delegates are hoping for some form of landmark agreement.
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Jaw bone fragment studied by British scientist comes from a smaller cousin of the better known Triceratops.