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A series of experiments published in the journal Nature Medicine suggest young adult women have primitive stem cells that could generate new eggs. The findings are generating both excitement and questions.

On Wednesday, the European Central Bank, for the second time, will offer banks an unlimited volume of three-year loans at low interest rates. The last time Europe's central bank did this, at the end of last year, banks borrowed more than $650 billion. That loan program helped stabilize markets and bought time for Greece and its creditors to work things out.

The Republican presidential candidates face two important primaries Tuesday with high stakes for former Massachusetts Governor Mitt Romney. Polls for contests in Arizona and Michigan showed the once-designated front-runner falling behind former Pennsylvania Senator Rick Santorum until recently, when Romney has pulled even or slightly ahead.

Senegal awaits the results of the first round of Sunday's contentious presidential election. Unofficial tallies indicate a possible runoff between the sitting president and a former political ally. The vote was preceded by deadly violence — sparked by opposition to a third term bid by the West African nation's octogenarian leader.

In the Citizens United Case in 2010, the U.S. Supreme Court ruled corporations and unions have a constitutional right to spend unlimited money on political ads. State courts are expected to follow that principle. But in December, Montana's high court refused to go along. It argued Montana's history and demography make it different enough to deserve an exemption from the federal ruling.

A man in Washington, Pa., was at home when a burglar broke in. The Observer-Reporter newspaper says the thief pulled a knife. So the homeowner pulled out a ceramic coffee mug and smacked him on the head.

The plan has been for U.S. and NATO military personnel to be be in Afghanistan at least another two years to advise the Afghan military. Attacks and protests, though, are making it increasingly difficult to perform that mission.

The company calls WikiLeaks' actions deplorable and illegal. WikiLeaks says it is exposing a firm that provides "confidential intelligence services to large corporations."

The company also said it would resubmit an application to the Obama administration that reroutes the pipeline away from the environmentally sensitive Sandhills of Nebraska.

In a 2003 decision, the U.S. Supreme Court ruled to uphold affirmative action and said it expected that in 25 years, "the use of racial preferences will no longer be necessary." The court will hear a case involving race-conscious admissions at the University of Texas in the fall.