He says it is increasingly important to do this analysis in connection with urbanization because more than half of the world population lives in urban areas.

VOA: standard.2009.03.23

Costello says she expects more studies as DNA analysis gets cheaper and faster.

VOA: standard.2010.06.30

The USDA analysis also concludes that the climate bill now before Congress gives farmers opportunities to more than offset their financial losses, although not all farmers may be able to take advantage of them.

VOA: standard.2009.12.12