He says the region's Baluch people have important ethnic and cultural differences from Pashtuns in the tribal belt that make them less willing to harbor militants.

VOA: standard.2009.03.19

Exactly how the differences in bacteria might make vaginally born babies less prone to allergies and asthma isn't yet clear, but it does point to a difference that researchers can look at going forward.

VOA: standard.2010.06.30