"People consume entertainment like movies and sports so they don't have to care about other people's problems, " he says.

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The two are now working on ways to make the breadth of Twitter content more visible to first-time visitors, helping them quickly discover information about stocks, sports and other topics and people they care about, people familiar with the matter have said.

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"This is just yet another way through which humans exert their inherent natural tendency to try to connect to other people that they care about, " he said.

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"One of the things I do whenever I bring a solar suitcase to a clinic in another country is, I really let the health-care workers know that there are people on the other side of the world who care about them, " she said.

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In other words, people really may not care much about privacy issues.

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What we want to do is help them discover ways to reduce the levels of consumption, around a bunch of people that actually care about them, and reduce their utilization of these other expensive services.

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"Going forward I hope it forces Target and other companies to take another look when they realize how many people out there care about this issue, " she said.

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Over the course of a year, patients with the pain-treatment team had an average of about 10 or 11 meetings or other contacts with their team members, unlike people with regular care.

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Unions for nurses and other health-care workers vowed to continue fighting the closure of the hospital, which employs about 2, 000 people.

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