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Known for its sparkling turquoise waters and white sand, Spain's Mediterranean beaches are developing a new reputation — for a growing number of jellyfish. Scientists blame overfishing and, possibly, climate change for the spike in stinging invertebrates.

The resurgence of diplomacy in the Iranian nuclear standoff has generated hope in the West for a peaceful solution to the long-running crisis, and hope in Iran for the lifting of painful economic sanctions. But the new opening has also invigorated hard-line opponents in Israel, Washington and Tehran. Analysts say pressure from these conservative critics could derail the talks as they enter a particularly difficult phase.

The new mobile operating system's design acknowledges that we no longer need physical analogs — like a camera shutter or old-timey microphone — to describe an app's function.

In 2001, Portland, Ore., was the first to develop a new kind of streetcar system. Success there led to a resurgence, with at least two dozen cities planning, building or expanding trolley lines — places like Atlanta; St. Louis, Mo.; and Tucson, Ariz. But some wonder whether it's the best way to spend limited transit dollars.

Seven months into his papacy, Pope Francis is shaking up the Catholic world, with outspoken interviews and cold calls to ordinary people. But some Catholic conservatives are deeply uncomfortable and worried that the Vatican has lost control of the papal message.

Lots of parents yell at their teenagers, but harsh verbal punishment is associated with more bad behavior on the part of the kid. Research shows that yelling is ineffective for changing behavior. A step back and a deep breath may be better options.

There are many ways to look at civil war: ethnic factions, economic divides and religions differences. But increasingly, some say we should also look at climate change as a factor as well, as it is often what forces internal migrations in nations already simmering with ethnic and sectarian tensions.

China is greeting the Year of the Horse with a little less fanfare, noise and smoke, after severe air pollution choked scores of cities last year. Firework sales are down, and more people say they're forgoing the ancient and beloved good-luck tradition for the sake of their lungs and health.

A Jordanian woman brought her camel's milk skin-care line — and a biotech startup — to Missouri. Her company is studying how the long-acting antibodies in camel's milk can help clear up acne.

The mysterious Clovis culture, which appeared in North America about 13,000 years ago, appears to be the forerunner of Native Americans throughout the Americas, a study of DNA evidence suggests. Remains from an infant buried more than 12,000 years ago at a Clovis site in modern Montana held the genetic key.