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VOLUME 103 | NUMBER 2 | March 2015

Carbon Nanotubes Deliver in Medicine

Khuloud T. Al-Jamal

Attaching compounds to these hairlike devices turns them into powerful tools for imaging and targeted therapies.


Walking the Edge of the Earth

Leila Christine Nadir

Eve Mosher’s art project HighWaterLine takes climate science to the streets.


The 100-Billion-Body Problem

Brian Hayes

A full-scale computer simulation of the galaxy we call home must trace the motions of at least 1011 stars and other objects over several billion years.


The Forgotten Father of Epigenetics

W. Malcolm Byrnes

A theory put forward in the 1930s by E. E. Just, embryologist and African American, shares surprising connections with our emerging understanding of development.


What Next for Particle Physics?

Jon Butterworth

The discovery of the Higgs boson at the Large Hadron Collider was a triumph for the Standard Model. Now the hunt is on for a deeper theory of reality.


Phytoliths: The Storytelling Stones Inside Plants

Thomas C. Hart

These microscopic structures, which arise from silica present in plant tissues, are finding a wide variety of uses, from archaeology to forensics.


Testosterone in Women


Diseases Without Borders


The Origins of Lying and Deception in Everyday Life

Michael Lewis

How do children make sense of the complex social code that dictates when they should or should not lie?


Thoroughly Modern Microbes

Margaret Clark

A brief review of Missing Microbes: How the Overuse of Antibiotics Is Fueling Our Modern Plagues, by Margaret Clark


The Evolution of Friendship

Harold Green

A brief review of Talent for Friendship: Rediscovery of a Remarkable Trait, by Harold M. Green


Snow Science

Sandra J. Ackerman

A brief review of Secrets of the Greatest Snow on Earth, by Sandra J. Ackerman


If These Cubicles Could Talk

Dianne Timblin

A brief review of Fearless Genius: The Digital Revolution in Silicon Valley, 1985–2000, by Dianne Timblin


The Increasing Problem of Nutrient Runoff on the Coast

Ashanti Johnson, Melanie Harrison

As development increases along coastlines worldwide, water quality—and everything that depends on it—degrades.


How Animals Communicate Via Pheromones

Tristram Wyatt

Human behaviors are probably influenced by invisible smell signals, just like all other animals.


Climate Change and Cholera

Sandra J. Ackerman

Research from many fields is uncovering important connections.


Iron in the Sun

Fenella Saunders

An interview with experimental physicist James Bailey about re-creating conditions deep within the Sun, albeit briefly and on a small scale.


Briefings


Seismic Visions of Middle Earth

Catherine Clabby

Abundant seismic data, new mathematical analyses, and powerful supercomputers are yielding a detailed look beneath the ground, into Earth’s mantle.


Second Life of a Tied-Arch Bridge

Henry Petroski

After more than a century of service in Lawrence, Massachusetts, a historic work of structural engineering found a new home at Merrimack College.



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