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The U.S., the IMF's most powerful member, has refused to sign off on reforms. On Saturday, global leaders suggested the IMF would turn to other options if Congress doesn't act by year's end.

Frustrated With Congress, IMF Heads Leave D.C. With Budding Idea

As far as looks go, Washington turned in a dazzling performance as host city for this past week's meetings at the International Monetary Fund and World Bank.

Cherry blossoms peaked, tulips popped, and the air carried the sweet scent of hyacinths.

But politics-wise, Washington let down its global guests. They came begging Congress to approve a package of IMF reforms, but are leaving Sunday with nothing.

"We are all very disappointed by the ongoing failure to bring these reforms to conclusion," Australia's Treasurer Joe Hockey told reporters.

The world must cut its greenhouse gas emissions to meet its goals, climate experts said Sunday. Members of the Intergovernmental Panel on Climate Change (left to right) Youba Sakona, Ramon Pichs Madruga, Ottmar Edenhofer and Rajendra Pachauri hold copies of their new report in Berlin.

Climate Change Adjustments Must Be Fast And Major, U.N. Panel Says

A new report from the United Nations' panel on climate change says major action is needed, and fast, if policy makers want to limit global warming to acceptable levels.

There's an international target to control climate change: keeping the global temperature rise to just 2 degrees Celsius above pre-industrial levels — that's 3.6 degrees Fahrenheit. The Intergovernmental Panel on Climate Change now says it's technically possible to meet that goal. But doing so will require rapid, large-scale shifts in energy production and use.

As <em>Mad Men</em> returns for its seventh season, its entire sprawling cast has plenty to do.

'Mad Men' Returns, Full Of Footnotes

Imagine a scene in which a man is sitting on a park bench reading a book. A woman comes up and sits beside him. He looks up at her. She hands him a letter. "It's over," she says.

Pope Francis poses for pictures with the audience after Palm Sunday service in St. Peter's Square at the Vatican Sunday.

Pope Francis Poses For Selfies With Crowd At St. Peter's

After speaking to a crowd that was estimated at 100,000 people Sunday, Pope Francis moved through the audience in his popemobile — and then delighted some of those in attendance by getting out of the vehicle and posing for photos with them.

Francis posed for photos several times during his circuit through St. Peter's Square, where throngs of the faithful had gathered to hear him speak on Palm Sunday.

"After the ceremony, the pope hopped onto his popemobile and moved through the crowd, often getting off to pose for selfies with young people," NPR's Sylvia Poggioli reports.

A Pro-Russian force guards a barricade outside a regional police building seized by armed men in Slovyansk Sunday. Ukraine, which launched an "anti-terrorist operation" in the eastern town, says one of its officers has been killed in a clash near the town.

Ukraine Says An Officer Died In Battle With Pro-Russian Forces

A Ukrainian Security Service officer has been killed and five others wounded in the eastern city of Slovyansk, officials from Ukraine's interim government said Sunday. The casualty comes after Ukraine pledged a "very tough" response to those occupying government buildings.

Lawmaker Says U.S. Must Go Beyond Sanctions With Russia

Putin Could Send Europe Scrambling For Energy Sources

Armed Pro-Russian Men Hold Police Station In Eastern Ukraine

Evidence Against Boston Bombing Suspect Is Plentiful

Drug Courts Help Addicts Recover — But May Cost Them Their Rights

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