 Police have been setting up roadblocks in the Kenyan capital, Nairobi, as anti-government demonstrators prepare to return to the streets. The protesters have already forced President William Ruto to abandon his deeply unpopular finance bill. Scientists studying fossil fragments of a Neanderthal community have found the earliest known instance of Down syndrome in a young child. They say fragments of the temporal bones indicate the child was also deaf and suffered from severe balance problems.