Speaking to 50,000 German youngsters, the pontiff suggested that kids today spend too much time on futile activities, such as the Internet and TV.
Hungarian research suggests that those born in the summer are moodier adults than those born in the winter.
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The agency says in a statement that a report in an Italian magazine that it "has targeted" the Vatican is false.
The pope's Twitter handle is live again as Cardinal Jorge Mario Bergoglio steps up to lead the Catholic Church and sends his first tweet.
Last week, the Vatican announced that the pope's postings to Twitter would end upon his official retirement day. His tweets have been summarily removed.
If you need an indulgence for your sins, follow the pontiff at Catholic World Youth Day. But your click should come from the heart.
The venture capitalist has been tweeting up a storm, sharing his thoughts on everything from startups to activist shareholders. In an exclusive interview, Andreessen offers his take on the Apple Watch, bitcoin and dot-com blunders.
One of Bill Gates' all-time favorite programmers is back after pondering the hypothetical: What would people do if the phone had never been invented before the Internet came along?
Questions for the pontiff range from earnest to rude and cover a wide spectrum of topics from faith to "The Cosby Show."