CHARLESTON, S.C. (AP) -- While most Americans are familiar with the Underground Railroad that helped Southern slaves escape north before the Civil War, the first clandestine path to freedom ran for more than a century in the opposite direction.

WASHINGTON (AP) -- A new clue in one of the 20th century's most enduring mysteries could soon uncover the fate of American aviator Amelia Earhart, who went missing without a trace over the South Pacific 75 years ago, investigators said Tuesday.

WASHINGTON (AP) -- The Supreme Court has several options in ruling on President Barack Obama's health care overhaul, from upholding the law to striking it down in its entirety. The court also could avoid deciding the law's constitutionality at all, if it finds the lawsuits challenging the law are premature.

ORLANDO, Fla. (AP) -- College students around Florida are rallying to demand the arrest of a neighborhood watch captain who shot an unarmed black teen last month.

CAPE CANAVERAL, Fla. (AP) -- The International Space Station should be getting its first commercial cargo shipment in early May.

NEW YORK (AP) -- Wendy's has dethroned Burger King as the country's second biggest hamburger chain.

WASHINGTON (AP) -- Here's a thought that can't comfort President Barack Obama: The fate of his health care overhaul rests with four Republican-appointed Supreme Court justices.

NEW ORLEANS (AP) -- The millions of dollars spent by Mitt Romney's allies on TV ads attacking his two main rivals have helped Romney pull ahead in the GOP presidential race. The resulting bitterness, however, is making it hard for him to lock down the nomination and end the party fighting that delights Democrats.

LAKE TAPPS, Wash. (AP) -- A diverging portrait of the Army sergeant accused of killing 16 Afghan villagers is emerging as records and interviews reveal a man appreciated by friends and family who won military commendations, yet one who faced professional disappointment, financial trouble and brushes with the law.

WASHINGTON (AP) -- As a new generation of teachers replaces retiring baby boomers, financially strapped states face a quandary - what to do about teacher pensions.