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You've heard a lot about the "Internet of things" — a network of smart devices that anticipate your needs. This one doesn't do anything particularly useful, but it does have the most holiday cheer.

Should they or shouldn't they? That's the question Brazilians are asking themselves after Edward Snowden's "open letter" lauding Brazil's role in protecting privacy rights and alluding to his hand in uncovering spying against their president.

Space weather can be heard, in a sense, by tuning in to CRaTER Radio, a "sonification" project that uses data from a NASA lunar orbiter to generate musical sounds. The results are then streamed onto the Internet.

The Everly Brothers influenced an entire generation of popular musicians. Don's voice usually handled the melody, but Phil gave the higher accompanying harmony to that melody, which defined the brothers' sound. Phil Everly died Friday from chronic obstructive pulmonary disease. He was 74.

A pair of U.S. diplomats are heard discussing the merits of various Ukrainian opposition figures. One of them is heard using a profanity directed toward the European Union.

Indonesia says it has downgraded its relations with Canberra following reports that Australia's security services spied on Indonesian President Susilo Bambang Yudhoyono. In other news, Northern Ireland's attorney general wants criminal prosecutions in killings related to the Troubles stopped; and Venezuela's National Assembly gives the president sweeping new powers.

Developmental psychologists are trying to figure out what very small children know and when they know it. The answer: a lot, and a lot earlier than you think. One experiment finds that 18-month-olds can reason abstractly when sorting blocks, well before they are able to explain it.

Climate change will likely hurt food production, raise food prices and increase hunger. But those calamities may not be inevitable, according to a group of international agriculture researchers.

The list of people who aren't accounted for has continued to shrink since early reports that nearly 200 people were missing after the mudslide. Officials have raised the death toll to 18 people.

A judge this week sentenced more than 500 men to death for the killing of a policeman. He's now presiding over a case with 700 defendants as the country's courts come under increasing criticism.