Weekend Edition Sunday on NPR News

On-Air Challenge: Every answer is a phrase in the form "___ in the ___." You'll be given rhymes for the first and last words, and you give the phrases.

Last Week's Challenge From Listener Peter Persoff of Piedmont, Calif.: Think of a common three-letter word and five-letter word that together consist of eight different letters of the alphabet. Put the same pair of letters in front of each of these words, and you will have the present and past-tense forms of the same verb. What words are these?

Host Rachel Martin talks with NPR's Julie McCarthy in Islamabad and Quil Lawrence in Kabul about the situation on the ground in that region of Afghanistan.

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Last fall, Abe Lincoln lost his sword. A copper blade went missing from atop President Abraham Lincoln's burial site in Illinois. Authorities eventually recovered it, but in two pieces. Now, as Rachel Otwell reports, the artifact has been replaced.

RACHEL OTWELL, BYLINE: Lincoln's tomb is at Oak Ridge Cemetery in Springfield, Illinois. It's a massive structure with statues of Union soldiers that reach far into the sky. Mikle Siere works at the historic site. He describes the statue the sword was taken from.

Host Rachel Martin talks with China scholar Perry Link about activist Chen Guangcheng's arrival in the U.S. Link has followed the lives of Chinese dissidents involved with the 1989 Tiananmen Square protests.

Out West Sunday, it will start getting dark earlier than normal, but just for a little while. A major solar eclipse, although not quite total, will spread across the skies in a 200-mile swath from Oregon into west Texas. Longtime Washington, D.C., meteorologist Bob Ryan has traveled the world chasing eclipses with his wife. He joins host Rachel Martin.

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Writer Paul Theroux can't shake Africa. Almost 50 years ago, he lived in the small central African nation of Malawi. Theroux was there for four years teaching English as a Peace Corps volunteer, and some of the most visceral details have stayed with him.

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Egyptians are getting ready for an historic vote, their first real presidential election since former President Hosni Mubarak was ousted during the Arab Spring. Twelve candidates are in the running. One them, former Prime Minister Ahmed Shafiq, is already dividing voters ahead of Wednesday's vote. Many consider Shafiq a corrupt holdover from the old regime.

But as NPR's Soraya Sarhaddi Nelson reports from Cairo, he is gaining widespread support from Egyptians fed up with the growing insecurity in their country.

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This is WEEKEND EDITION from NPR News. I'm Rachel Martin. World leaders are gathered in Chicago for a two-day NATO summit, which starts this morning. The summit agenda centers on Afghanistan, specifically figuring out how to meet a 2014 withdrawal deadline while shoring up Afghanistan's security forces. We'll hear a view from the White House in a moment. But we begin with this report from NPR's Jackie Northam in Chicago.

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The White House is urging war-weary NATO leaders to dig deeper into their pockets to share the commitment to get Afghanistan's forces to stand up on their own so U.S. and NATO forces can pull out in 2014. Host Rachel Martin speaks with Ben Rhodes, White House spokesperson on national security issues.