Scientific American 2009-04 - Dark Energy

Table of Contents; April 2009; by Staff Editor; 3 Page(s)

From the Editor - Nothing Special; April 2009; by John Rennie; 2 Page(s)

We're an ordinary species on an ordinary planet. Or are we?

Letters; April 2009; by Staff Editor; 2 Page(s)

Financial Crisis -- Car Tech -- Earthrise

50, 100 and 150 Years Ago; April 2009; by Daniel C. Schlenoff; 1 Page(s)

The Mohole -- Analog Voice Recognition -- Our Patent Business

Updates; April 2009; by Philip Yam; 1 Page(s)

Fingerprint Feeling -- Stem Cell Progress -- Moonїs Backside -- Even Higher Seas

Evolution in a Bottle; April 2009; by W. Wayt Gibbs; 2 Page(s)

Self-replicating RNAs advance science another step toward artificial life

A Chip Against Cancer; April 2009; by Elaine Schattner; 2 Page(s)

Evaluating tumors and their treatment via a blood sample

Colliding Philosophies; April 2009; by Davide Castelvecchi; 3 Page(s)

A novel way to rummage for particles in accelerator debris

Finding Balance; April 2009; by Brendan Borrell; 3 Page(s)

Is poor posture control the real cause of motion sickness?

Thriving on Selfishness; April 2009; by Marina Krakovsky; 2 Page(s)

Why it pays for cheaters to punish other cheaters

Snakebit; April 2009; by Michael Tennesen; 3 Page(s)

Southern California sees a rise in extratoxic venom

News Scan Briefs; April 2009; by Kate Wilcox, Charles Q. Choi, John Matson, David Biello, Coco Ballantyne; 2 Page(s)

Anti-Loudness Protein; Sonic Heat for Genes; A Beetle's Menu Change; A Calcium Conundrum Explained; Math Against Profiling; No Nets in the Arctic; Leaves for Leaving Alone; Quitters' Cash; When Orbits Collide

SciAm Perspectives: Healthy Growth for U.S. Farms; April 2009; by The Editors; 1 Page(s)

Congress and the FDA must upend the nationїs agricultural policies to keep its food supply safe

Sustainable Developments: Needed: A Fiscal Framework; April 2009; by Jeffrey D. Sachs; 1 Page(s)

Rather than arguing about the value of taxes or spending, economic planners need to take a systematic long view

Skeptic: Inside the Outliers; April 2009; by Michael Shermer; 2 Page(s)

Are successful people primarily the beneficiaries of luck, timing, and cultural legacy?

Anti Gravity: Boobs at Work; April 2009; by Steve Mirsky; 1 Page(s)

Unacceptable ways to waste time on the job

Saving the Honeybee; April 2009; by Diana Cox-Foster and Dennis vanEngelsdorp; 8 Page(s)

The mysterious ailment called colony collapse disorder has wiped out large numbers of the bees that pollinate a third of our crops. The causes turn out to be surprisingly complex, but solutions are emerging

Does Dark Energy Really Exist?; April 2009; by Timothy Clifton and Pedro G. Ferreira; 8 Page(s)

Maybe not. The observations that led astronomers to deduce its existence could have another explanation: that our galaxy lies at the center of a giant cosmic void

The Evolution of Primate Color Vision; April 2009; by Gerald H. Jacobs and Jeremy Nathans; 8 Page(s)

Analyses of primate visual pigments show that our color vision evolved in an unusual way and that the brain is more adaptable than generally thought

The Post-Traumatic Stress Trap; April 2009; by David Dobbs; 6 Page(s)

A growing number of experts insist that the concept of post-traumatic stress disorder is itself disordered and that soldiers are suffering as a result

The Dawn of the Miniature Green Lasers; April 2009; by Shuji Nakamura and Michael Riordan; 6 Page(s)

Semiconductors can generate laser light in all colors except one. But new techniques for growing laser diodes could soon make brilliant full-spectrum displays a reality

Preventing the Next Pandemic; April 2009; by Nathan Wolfe; 6 Page(s)

An international network for monitoring the flow of viruses from animals to humans might help scientists head off global epidemics

Reviews; April 2009; by Michelle Press; 2 Page(s)

Human Mysteries; Mathematical Mysticism; Resistance of the Real