Taino and African ancestry in Puerto Ricans

Here's a news story about a talk given at the latest ASHG/ICHG meeting. Bustamante et al. have been looking at admixture among Puerto Ricans (apparently the latest addition to the 1000 Genomes project), and specifically looking at the lengths of DNA segments belonging to different groups in order to infer the temporal and geographic patterns of historical admixture.
Rebuilding the genome of a hidden ethnicity