In the past year, the U.S. government took strong measures to seal the border with Mexico, and the U.S. Border Patrol is reporting that arrests are down 10 percent from last year. Advocates of tougher enforcement point to these facts and say that the crackdown is deterring would-be illegals.

Since their first appearance some 20 years ago, "hospitalists" — doctors who manage patient care during a hospital stay — have assumed an increasingly complex role in the healthcare system.

How much do you know about the economy of your state or region? Does it matter if the general public understands their economy? Robert E.

Peter Drucker, sometimes called the father of modern management, once commented that health care organizations are the most difficult to manage of all organizations. For example, American health care is defined by legislative mandate yet implemented in the private sector.

Arizona's record of economic progress in recent years is well documented. In 2006, the state led the nation in population and job growth and was fifth in growth of personal income.

Tortillas, and the corn used to make them, have been a Mexican staple for thousands of years. So it's no surprise that tens of thousands packed into Mexico City's central Zocalo plaza to protest a spike in the price of tortillas and other staple goods.

Many companies have noted that attrition among women and minorities in the professional and managerial ranks hampers progress on building a diverse workplace.

Spending by state government in Arizona is on the rise.

In an ideal world, consumers' choices in relation to the incremental costs of producing goods and services would dictate what gets produced, and at what price. Choices should tell us about preferences.

While many scientists applaud former Vice President Al Gore and his documentary, "An Inconvenient Truth," some scientists have said that the film exaggerates the nature of environmental problems and/or makes conclusions that the science doesn't uphold.