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At 4:30 a.m., medical student Ryan Klitgaard would wake up to a Nicaraguan newspaper vendor yelling through a megaphone. Then came a day of treating patients — and fending off dogs and chickens.

An initiative launched with Maria Shriver's input is raising questions over how the hotel company pays its staff — and whether guests should be expected to tip.

Heating pads and other passive treatments don't do any good if the goal is gaining strength and mobility, according to the Choosing Wisely campaign. Instead, it's all about the exercise.

By playing with the physics of wing color, scientists get a glimpse into how butterflies get their colors, and how quickly they can evolve from brown to brilliant.

Studies warn that climate change will threaten corn production in coming decades. Meanwhile, farmers are experimenting with new planting methods in hopes of slowing soil erosion from torrential rains.

The indictment stems from the Texas governor's veto of funding for a public integrity office after the Democratic head of the office was arrested for drunk driving.

Steven Ellison has built an impressive reputation among critics and fans in the know for mixing hip hop, jazz and electronica into something original. But even for the aforementioned followers, the new album from Ellison — better-known as Flying Lotus — is a surprise. It's all about death, not as something to be mourned but as a journey to be anticipated.

All around the country, drivers are seeing signs that gas prices are depressed. Those drops helped hold down the latest consumer price index. But economists worry about too much of a good thing.

Running back Marcus Lattimore, 23, retired from the NFL Wednesday. He says he chose a higher quality of life, citing a lingering knee injury. Lattimore reportedly has a $1.7 million insurance policy.

Six banks, including Citigroup, Bank of America and J.P. Morgan Chase, will pay regulators more than $4 billion to settle charges they manipulated the currency exchange market to boost profits.