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Commemorative Calculus: How an Algorithm Helped Arrange the Names on the 9/11 Memorial

At first glance--and even after deep scrutiny--the names on a new memorial to those killed on September 11, 2001, seem randomly arrayed. The names are not arranged alphabetically nor, for the most part, are they presented in labeled groups. But the memorial's layout is anything but random

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Use It Better: The Smart Ways to Pick Passwords

If you want to be absolutely secure, you should make up a different password for every single Web site you visit. Each password should have at least 16 characters, and it should contain a scramble of letters, numbers, and punctuation; it should contain no recognizable words.

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Yellowing Eyes May Keep Seniors Awake

Aging is not for the squeamish: skin sags, joints ache and hearing might start to go. And many seniors have trouble sleeping, which can lead to other health problems.

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9/11, Ten Years Later

The attacks on September 11, 2001, profoundly influenced the direction of science and technology. What's been learned since those events, and how they have shaped our lives [More]

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JellyWatch

Help marine biologists track the movement and location of jellyfish and other unusual marine life [More]

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Geoengineering Too "Immature" to Combat Climate Change

No geoengineering methods are ready for use to combat climate change, the Government Accountability Office said in a report released late last month, citing concerns about cost, effectiveness and adverse consequences. "Climate engineering technologies do not now offer a viable response to global climate change," GAO said in the report commissioned by former House Science, Space and Technology Committee Chairman Bart Gordon (D-Tenn.)

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How Accurate Are Memories of 9/11?

For most Americans, as the nation's thoughts turn to the 10th anniversary of the 9/11 terrorist attacks, memories of that day readily come flooding back. People can remember with great clarity what they were doing or to whom they were speaking when they learned of the crisis--whether via a sister's phone call or a first-hand glimpse of the World Trade Center on fire. [More]

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