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Dolphins have been stranding themselves along the shores of Cape Cod Bay since the Pilgrims' times, and this winter is no different. What is different is how long the latest round of strandings has lasted — almost a month. No one knows why the animals come ashore, but when they do teams of rescuers mobilize to try to save them.

Anti-government protests in Russia are taking many forms — one of the latest is a feminist collective's performance in Red Square of a song criticizing Prime Minister Vladimir Putin. The guerrilla group says it plans more exploits before March's presidential elections.

Rick Santorum won the Colorado caucuses Tuesday on the strength of social conservative and Tea Party voters. Yet he fared differently in one battleground county that will be key in the swing state in November.

A top State Department official wants to unleash the power of Twitter, Facebook and other services to crowdsource the fight to control the world's nuclear weapons.

Some religious groups have attacked the Obama administration's plan to require most employers to provide coverage for prescription contraceptives. GOP lawmakers are now vowing to overturn the requirement; meanwhile, Democrats say they'll fight to maintain it to protect women's health.

Fresh off victories in Minnesota, Colorado and Missouri, Republican presidential candidate Rick Santorum campaigned in Texas on Wednesday. He told a small group of pastors, some of them former supporters of Texas Gov. Rick Perry, that he is the true conservative left to challenge Mitt Romney.

The ancient Chinese martial art has been shown to benefit older people by maintaining balance and strength. Now, researchers find Tai Chi can also benefit patients who suffer from Parkinson's, a progressive disorder of the nervous system that affects movement and motor control.

The most powerful superPAC in this election may be one that hasn't visibly flexed its muscles yet. But the man who runs American Crossroads and its nonprofit sibling Crossroads GPS says the groups have a clear goal: Stop President Obama's agenda and replace him as president.

Forces loyal to President Bashar Assad are again shelling the city, according to reports from Homs. There's also been fighting reported in some other places.

Also: Jobless claims drop; Greek government reaches austerity deal; new nuclear reactors likely in Georgia.