A broken hip like the one at left is a big health worry for older women. iStockphoto.com hide caption

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Oceans, and the innards of Earth itself, are the final frontiers of our planet. Expect amazing discoveries as explorers document more and more of this unseen realm. Hulton Archive/Getty Images hide caption

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Strenuous mental exercise like reading difficult books, solving tricky math problems — or, maybe, playing the right video game — can help keep a healthy brain sharp, research suggests. Images.com/Corbis hide caption

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Michael Pagliaro, left, laughs with Paul Scattaretico at the Muzic Store Inc. in Dobbs Ferry, N.Y., as Pagliaro picks up instruments for his rental business. Before Pagliaro had a hip replacement, pain made it difficult to work. Maggie Starbard/NPR hide caption

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Depression is common among old people, affecting up to 25 percent. iStockphoto.com hide caption

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The number of eyelid lifts reimbursed by Medicare more than tripled from 2001 to 2011, according to the Center for Public Integrity. Here, a woman is prepared for the procedure, along with an eyebrow lift. Media for Medical/UIG via Getty Images hide caption

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Group houses are becoming popular — again — among some single baby boomers, and not just for financial reasons. Marianne Kilkenny (second from right) shares her home in Asheville, N.C, with four other people. Mike Belleme/The New York Times hide caption

itoggle caption Mike Belleme/The New York Times

Confusion over the details of the new health care law is leaving many people vulnerable to con artists. Evelyne Lois Such, 86, was recently the target of an attempted scam. Matt Nager for NPR hide caption

itoggle caption Matt Nager for NPR