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When members of a choir sing, their heart rates quickly become synchronized, beating in the same rhythm. Researchers think this may be why singing together is a key part of religious rituals around the world, and such a joy for the singers.

Novelist Kate Christensen makes a plot line of her own life in a memoir that describes her struggles to come to terms with her family, her relationships and her sometimes violent father. A passionate lover of food, Christensen weaves recipes into a story of survival.

The X-47B is an experimental flying wing with a UFO-like profile. Now it's also the first unmanned aerial vehicle to land on an aircraft carrier.

Our commenters point out that the Middle East isn't the only place with confusing laws regulating the purchase and consumption of alcohol. Dry counties, wet counties, blue laws and mini-bottles: Jurisdictions across the U.S. also grapple with how to regulate alcohol sales.

This week has seen recriminations against Al-Jazeera on the part of military leaders and other journalists in Egypt. The network's coverage has been seen as biased toward the Muslim Brotherhood. Now some Al-Jazeera staffers are resigning in protest against their company's coverage. Robert Siegel talks with Arab media expert Courtney Radsch.

Audie Cornish talks to Steven Cook of the Council of Foreign Relations about the current and historical role of the Egyptian military in politics.

In Egypt, religious minorities are embracing the ouster of Islamist President Mohammed Morsi. Attacks on Coptic Christians and Shiite Muslims escalated during his year in office. But the military, which installed the interim government, has had a checkered reputation of its own, killing and imprisoning minorities during past rule.

July 10 is the 100th anniversary of the hottest temperature ever recorded on Earth, and a large crowd is expected in Death Valley to celebrate it. In fact, summer is the area's busiest tourist season. Many of these "heat tourists" come from Europe, eager to feel temperatures they don't get at home.

Suspected Boston Marathon bomber Dzhokar Tsarnaev was arraigned on Wednesday. Tsarnaev has been indicted on more than 30 charges, including using a weapon of mass destruction in the attack, which killed three people and injured more than 260. He is also charged with the murder of MIT police officer Sean Collier. Wednesday's court proceeding were Tsarnaev's first public appearance since he was captured four days after the bombings.

The crime drama, which airs Wednesday night on FX, code-switches between American English and Mexican Spanish. The network is trying to lure viewers who speak both languages.