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Scientists have frozen their ship to an ice floe to study the causes and consequences of diminishing Arctic ice, in the hopes of improving how the Arctic is represented in climate models.

After weeks of closed-door depositions, Democrats are planning open hearings this week about the Ukraine affair. Here's where the story stands — and what's coming next.

The full House is expected to approve two articles of impeachment against the president. The GOP-led Senate is already making plans for what leaders hope will be a quick trial in January.

This week's allegations that Herman Cain harassed two women during his tenure at the National Restaurant Association are far from the only obstacle he faces in his quest for the Republican nomination. In presidential elections, Americans rarely elect someone who has never held public office.

On Wednesday, a group of students walked out of a popular economics class because they say it pushes ideology that favors the rich at the expense of the poor. Host Steve Inskeep speaks with the professor of that class, Greg Mankiw, who used to be an economics advisor to President George W. Bush.

The U.S. Supreme Court ruled Monday that police must obtain a warrant before placing a GPS tracking device on a vehicle. The decision was unanimous, but three separate opinions on the legal rationale show that even Supreme Court justices have conflicting views of privacy in the information age.

With just one week to go before Iowa voters head to the caucuses, polls show a tight race. What do the GOP candidates need to do to gain an edge?

Lecturing has never been an effective teaching technique, and now that information is everywhere some say it's a waste of time. Now, physicists have the data to prove it. But efforts to lose the lecture encounter resistance — sometimes from students.

A major factor in the Syrian revolt is the battle between sectarian groups. The Assad family and the minority Alawites have held the top jobs for decades, and feel they would be trampled if the majority Sunni Muslims come to power. These sectarian tensions are never far from the surface in the Middle Eastern nations going through upheavals.

In 1857, a group of American intellectuals founded The Atlantic and used it to challenge the institution of slavery. Now, on the 150th anniversary of the Civil War's beginning, a new issue of the magazine reaches back to a time when slavery — and the future of the United States — was still an open question.