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

The state-by-state information is not yet complete, but Marc Perry says demographers found a clear trend in population growth.

VOA: special.2011.03.14

He believed music should be simple and clear, yet played in a meaningful way.

VOA: special.2009.03.01

Exactly how is not clear yet.

VOA: special.2009.02.13

Yet,it was clear the end was near.

VOA: special.2010.02.27