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Marine biologists worry that certain species won't survive the shifts in sea acidity that climate change brings. But research on sea grasses along California's coast suggest marine preserves can help.

Three years after the landmark Citizens United decision, the justices will hear a case that could undercut most of the remaining rules that limit big money in politics. Before the court on Tuesday is a challenge to the aggregate limits on contributions to candidates and political parties.

When medical research is published in a peer-reviewed journal, the presumption is that the study has been reviewed for accuracy. The advent of open-access journals has made it easier to be published.

More than 1 million high school boys play football in the U.S. With a growing body of evidence linking the sport with chronic brain injury, some schools are trying to change how teams play and practice — but they have a long way to go.

Climate skeptics point to 15 years of no warming trend as a reason to doubt global warming. But Kevin Trenberth at the National Center for Atmospheric Research can explain a good bit of that temperature plateau — and he argues the Earth has continued to warm appreciably, even though our thin blanket of atmosphere hasn't.

It's been 2 1/2 months since the Rana Plaza collapsed on garment workers in Bangladesh, drawing the world's attention to abysmal safety conditions in the country's factories. Two workers who survived the collapse tell their stories.

Saturday night's acquittal of George Zimmerman is reigniting conversations that began with the 2012 fatal shooting of 17-year-old Trayvon Martin. The case has sparked debates on race, profiling and Stand Your Ground laws.

Clarence Jones played an integral but mostly unseen role in the 1963 March on Washington. As Martin Luther King Jr.'s legal adviser, Jones assisted in drafting King's landmark speech, and drew from a recent event in Birmingham, Ala., to craft one of the speech's signature lines.

On the first day of 2013, Obama expressed a hope that the new year would bring "a little less drama" and "a little less brinkmanship." In fact, the year saw high drama, a government shutdown, and massive problems with the website at the core of the president's new health care law.

Organizers of the Winter Games are preparing to serve up quite a bit of the hearty, deep-red Russian soup. Which is kind of ironic, says Russian food writer Anya von Bremzen, since borscht carries with it complicated political implications. And not all borschts are created equal, she warns.