AliceRobertsexploresthelatestdiscoveriesinthestudyofhumanorigins,revealingthetransformationthathasbeenbroughtaboutinthisfieldbygenetics.　　Traditionalpaleo-anthropology,basedonfossils,isbeingtransformedbyadvancedgenomesequencingtechniques.Wenowknowthattherewereatleastfourotherdistinctspeciesofhumanontheplanetatthesametimea..eee