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Most won’t sweat income tax deadline, poll finds

WASHINGTON, D.C. — One in four Americans waited until the end of tax season to file their returns and a majority think they pay about the right amount in federal taxes, according to a new McClatchy-Marist Poll released Monday, a day before the tax deadline.

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NRA moves to new arena in fight over surgeon general

WASHINGTON, D.C. — In recent years, the National Rifle Association has stepped into fights over judicial nominees it views as weak on Second Amendment rights, but its decision to oppose a surgeon general nominee takes the powerful lobby into new territory, expanding its campaign to a post that has no direct power to regulate guns.

Scientists build man-made ‘living materials’ inside bacterial cells

LOS ANGELES — Our bones are remarkable feats of engineering: strong and yet light, shot through with holes and yet able to bear incredible loads. This super-strong natural material is built as cells incorporate hard minerals like calcium into living tissue. Now, scientists at the Massachusetts Institute of Technology are borrowing this idea from nature: They’ve created living cells that incorporate inorganic matter like gold and quantum dots.