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A Colorado gas station and car wash owner is already feeling the impact of sharply rising crude prices. Some analysts say continued increases could slow down the economy as it struggles to recover.

Israel's recent military operation in the Gaza Strip and subsequent blockade were meant to weaken the militant group Hamas. But Hamas' rule over the coastal enclave seems stronger than ever, even as it confronts a host of new challenges, including criticism that the group is not Islamist enough.

The Border Patrol's indicators of success for Operation Streamline don't always add up and neither do the numbers: No one knows just how much the program costs. The Border Patrol makes arrests, but the Justice Department and federal courts provide the logistics of convicting those who cross illegally.

Operation Streamline, first implemented in 2005, puts illegal border-crossers into the federal court system en masse and convicts them as federal criminals. Critics say the program takes resources from more violent cases and infringes on due process rights.

The U.S. unemployment rate surged far higher and has remained higher than in other major industrial countries. It's now at 9.6 percent. The big shift came when American companies cut workers more aggressively than foreign firms in the face of the financial crisis.

The massive reservoir behind China's Three Gorges Dam was supposed to be filled to capacity this month. But landslides on the reservoir and water shortages downstream have delayed the process. Questions have been raised about the dam, which is the world's largest hydropower project, and what it might mean for the Yangtze River.

Climate scientists say Colombia's glaciers could disappear within 15 years. Wet highland areas that provide much of the country's fresh water are getting warmer and drier. And each year, flooding becomes more severe. The coastal area of Tumaco has become an example of how environmental and security pressures are undermining previously stable communities.

Use of CT scans in the U.S. has more than tripled in less than two decades. Despite the medical benefits, these scans emit a significant amount of radiation. A new study estimates that 29,000 future cancers could be related to CT scans performed in the U.S. in 2007.

Warren Buffett recently announced plans to buy Burlington Northern Santa Fe Corp. The rail network extends across the the western two-thirds of the U.S. The company's system of 32,000 route miles extends across 28 states and two Candian provinces.

People born and raised in Suffolk County, N.Y., complain about dozens of people living in single-family homes; immigrants complain that they are victimized by locals. An Ecuadorean day laborer was murdered last year, allegedly by teenagers who said they regularly looked for immigrants to bash.