February 2007
Scientific American Magazine

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Cover; February 2007; by Staff Editor; 1 Page(s)

Table of Contents; February 2007; by Staff Editor; 2 Page(s)

SA Perspectives: Truth Time in Washington; February 2007; by Staff Editor; 1 Page(s)

A list for legislators

How to Contact Us and On the Web; February 2007; by Staff Editor; 1 Page(s)

Letters; February 2007; by Staff Editor; 2 Page(s)

50, 100 and 150 Years Ago; February 2007; by Staff Editor; 1 Page(s)

Viral Pattern; Breathing Machines; Science and Guilt

A Stroke for Stem Cells; February 2007; by Charles Q. Choi; 2 Page(s)

The brain becomes a target in stem cell clinical trials

Unsettled Scores; February 2007; by Marina Krakovsky; 3 Page(s)

Has the black-white IQ gap narrowed?

Chipping In; February 2007; by Anna Griffith; 3 Page(s)

Brain chip for memory repair closes in on live tests

Martian Rope Trick; February 2007; by George Musser; 2 Page(s)

NASA rewrites the book on Martian landings

Dial "I" for Internet; February 2007; by Wendy M. Grossman; 1 Page(s)

British Telecom bets all on Internet protocols

The Triangular Universe; February 2007; by Mark Alpert; 1 Page(s)

Instead of string theory, four-dimensional tetrahedrons

News Scan Briefs; February 2007; by Ciara Curtin, JR Minkel, Nikhil Swaminathan, David Biello; 2 Page(s)

Think of Money, Be Less Helpful; Cordless Charging; Deciphering Neandertal's Faded Genes; Free Flow on Mars; Methane Flatline; Edible Cottonseeds--If You Want to Eat Them

By the Numbers: License to Work; February 2007; by Rodger Doyle; 1 Page(s)

Professional licensing: road to social atherosclerosis?

Skeptic: Eat, Drink and Be Merry; February 2007; by Michael Shermer; 1 Page(s)

Or why we should learn to stop worrying and love food

Sustainable Developments: Moving beyond Kyoto; February 2007; by Jeffrey D. Sachs; 1 Page(s)

To seriously address the issue of global climate change, policymakers need to establish a framework that extends through the end of the century

Insights: Graft and Host, Together Forever; February 2007; by Marguerite Holloway; 2 Page(s)

Thomas E. Starzl pioneered organ transplantation with antirejection drugs--an approach he hopes to end through a phenomenom called microchimerism

The Universe's Invisible Hand; February 2007; by Christopher J. Conselice; 8 Page(s)

Dark energy does more than hurry along the expansion of the universe. It also has a stranglehold on the shape and spacing of galaxies

Tracking an Ancient Killer; February 2007; by Raymond R. Rogers and David W. Krause; 8 Page(s)

The case was cold--the bones in the mass grave were 70 million years old. But critical clues pointed to the killer's identity

Methane, Plants and Climate Change; February 2007; by Frank Keppler and Thomas R¿ckmann; 6 Page(s)

The surprising discovery that living plants produce a potent greenhouse gas poses new questions for managing global warming

Making Silicon Lase; February 2007; by Bahram Jalali; 8 Page(s)

Scientists have at last persuaded silicon to emit laser beams. In a few years, computers and other devices will handle light as well as electrons

Spice Healer; February 2007; by Gary Stix; 4 Page(s)

An ingredient in curry shows promise for treating Alzheimer's, cancer and other diseases

Digital TV at Last?; February 2007; by Michael Antonoff; 6 Page(s)

Analog TV broadcasting is set to end in two years, but its legacy could make the digital transition anything but smooth

Molecular Lego; February 2007; by Christian E. Schafmeister; 8 Page(s)

Small molecular building blocks that snap together rigidly enable chemists to design and manufacture nanometer-scale structures in virtually any shape

Working Knowledge: Song Beams; February 2007; by Mark Fischetti; 2 Page(s)

Satellite radio

Technicalities: Power Walker; February 2007; by Steven Ashley; 3 Page(s)

Nothing could match the Segway's initial hype, but how far has it come since?

Reviews: Why Aren't More Women Physicists?; February 2007; by Karen A. Frenkel; 2 Page(s)

La Dame d'Esprit and Out of the Shadows explore why more women do not become scientists

Anti Gravity: The Kindest Cut; February 2007; by Steve Mirsky; 1 Page(s)

Always do the math before you divvy

Ask the Experts; February 2007; by Paul Miller, Mark A. W. Andrews; 1 Page(s)

Why do cats have an inner eyelid, and what does it do? Why do veins pop out when we are exercising?