21.   A Busy Month for Black History Throughout February, cities across the United States are acknowledging Black History Month with exhibitions, performances and other events.

22.   A debtors movement known as El Barzon that began among bankrupt farmers has spread to cities across Mexico.

23.   A national conservation group warned Wednesday that in cities across the nation, the environment and quality of life are threatened by urban sprawl.

24.   A survey of cities across the nation showed a similar split between officials who were ordering increased security and those who said what was in place was already enough.

25.   Adding to this cultural revolution is the growing number of design centers and home furnishing stores in cities across the country.

26.   Activists planned marches in dozens of cities across nine countries, including at least six major cities in the United States, as the trial opened.

27.   But a number of cities across the nation are showing how to reduce crime by involving communities in their own policing.

28.   But high rates in U.S. cities across from intensely industrialized Mexican towns led researchers to suggest the defects may be tied to toxins generated by maquiladoras.

29.   But there are plenty of cities across the country where economic life is at least as lousy.

30.   Called Bizcamps, the summer program is being offered in seven cities across the country.