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September 2009

Volume 62, Issue 9

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Thermochronology and landscape evolution

Peter W. Reiners and David L. Shuster
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Radioactive decay, the diffusion of daughter nuclides, and the annealing of fission tracks are being used to develop time‐versus‐temperature histories of rocks and the processes that sculpt Earth's surface.

The Aharonov–Bohm effects: Variations on a subtle theme

Herman Batelaan and Akira Tonomura
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The notion, introduced 50 years ago, that electrons could be affected by electromagnetic potentials without coming in contact with actual force fields was received with a skepticism that has spawned a flourishing of experimental tests and expansions of the original idea.

Solid-state NMR in biological and materials physics

Clare P. Grey and Robert Tycko
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Ever-improving techniques for manipulating and probing nuclear spins make it possible to obtain detailed structural information about large molecules and disordered compounds.
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A century of physics: 1950 to 2050

Michael S. Turner
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Mermin habitually answers opinions, real and abstract

Michael Nauenberg, Derek Walton, Fred Kuttner, Bruce Rosenblum, Rodney Brooks, Leonardo Colletti, Amin Dharamsi, Mark Alford, Fletcher J. Goldin, Joseph Isler, Alexey Burov, Sabine Hossenfelder, Philip Pearle, and N. David Mermin
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Month‐long calculation resolves 82‐year‐old quantum paradox

Charles Day
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A chiral molecule's transition from a superposition of its left‐handed and right‐handed isomers to the isomers themselves reveals the nature of the quantum‐to‐classical transition.

Our bodies store hormone peptides in structures usually thought to be toxic

Charles Day
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Satellite altimetry quantifies the alarming thinning of Arctic sea ice

Mark Wilson
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A dramatic 57% loss in the volume of perennial ice between 2004 and 2008 may have set the stage for ice‐free summers within the next 30 years.

Physics Update

Bertram M. Schwarzschild, Steven K. Blau, Jermey N. A. Matthews, Stephen G. Benka, and Richard J. Fitzgerald
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US electricity grid still vulnerable to electromagnetic pulses

David Kramer
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Experts warn lawmakers that an intense solar storm or an attack by a single nuclear weapon could knock out power in an entire region for months.
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Physicist Steven Koonin takes on a new role as DOE's ‘technical conscience’

David Kramer
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Gathering Asian sky stories

Toni Feder
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Mexico hosts physics olympiad

Toni Feder
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News Notes

Toni Feder
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Web Watch

Charles Day
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The Pluto Files: The Rise and Fall of America's Favorite Planet and The Hunt for Planet X: New Worlds and the Fate of Pluto

Neil degrasse Tyson, Govert Schilling, and Mike Brown, Reviewer
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Defusing Armageddon: Inside NEST, America's Secret Nuclear Bomb Squad

Jeffrey T. Richelson and Dean Wilkening, Reviewer
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Physics, Formation and Evolution of Rotating Stars

A. Maeder and Steven Stahler, Reviewer
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Geochemical Kinetics

Youxue Zhang and Michael A. Velbel, Reviewer
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New Books

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Focus on magnetics and electromagnetism

Lawrence G. Rubin
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Robert Thomas Beyer

Murray Strasberg
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John David North

Robert W. Smith
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Friction, force chains, and falling fruit

Jacqueline Krim and Robert P. Behringer
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The chirality of beetles

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