Scientific American (January 2014)

Scientific American (January 2014)

Language: English

Pages: 76

ISBN: B01LXC2OP9

Format: PDF / Kindle (mobi) / ePub

Scientific American (January 2014)

Language: English

Pages: 76

ISBN: B01LXC2OP9

Format: PDF / Kindle (mobi) / ePub


How Unconscious Thought and Perception Affect Our Every Waking Moment
Unconscious impulses and desires impel what we think and do in ways Freud never dreamed of

Astronomers Search for Moons Circling Distant Exoplanets
Moons orbiting distant exoplanets may account for most of the habitable locales in the galaxy. If only we could find them

Scientists Successfully Model a Living Cell with Software
In creating the first complete computer model of an entire single-celled organism, biologists are forging a powerful new kind of tool for illuminating how life works

Superpowerful X-ray Laser Boils Atoms in Molecules, Nanosystems and Solids and Explodes Proteins, All in the Name of Science
What started as a “Star Wars” idea for a 1980s-era antimissile weapon is now a microscope of unprecedented power, able to create exotic forms of matter found nowhere else in the universe

A Global Transition to Renewable Energy Will Take Many Decades
The great hope for a quick and sweeping transition to renewable energy is wishful thinking

The Case against Copernicus
Copernicus famously said that Earth revolves around the sun. But opposition to this revolutionary idea didn't come just from the religious authorities. Evidence favored a different cosmology

La tabla periódica: La curiosa historia de los elementos

Bioinformatics and Biomarker Discovery: "Omic" Data Analysis for Personalized Medicine

Bad Science: Quacks, Hacks, and Big Pharma Flacks

The God Particle: If the Universe Is the Answer, What Is the Question?

Phylogeography of California

Surviving Your Thesis

 

 

 

 

 

 

 

 

 

 

 

 

 

 

clinicians hope such tests will help people who have a genuine medical condition to avoid the specific constituents of grains that make them ill and will stop others from unnecessarily cutting out nutrient-dense whole grains. S EEDS OF SICKNESS Two years ago, at the recommendation of a nutritionist, I stopped eating wheat and a few other grains. Within a matter of days the disabling headaches and fatigue that I had been suffering for months vanished. Initially my gastroenterologist

an astonishing precision. Yet in recent years uncertainties in the second contributor to the Lamb shift have begun to limit scientists’ predictive powers. This second cause has to do with the proton radius and the bizarre quantum-mechanical nature of the electron. In quantum mechanics, the electron takes the form of a cloudlike wave function that is spread out over the size of the atom. The wave function (more accurately, the square of it) describes the probability of finding the electron at a

analysis would back up the new, smaller result. Yet to their surprise, the results were nearly identical to the old radius: 0.877 femtometer. NEW IDEAS This discrepancy created great excitement in the community. Discrepancies are useful because they stimulate new thinking, which leads to new ideas and a better understanding of nature. At first, most people believed there must be a simple mistake. Perhaps something was off in the experiments, or perhaps the the- Four years after the puzzle came

of pertussis in highly vaccinated populations.” Finding out exactly how the different vaccines convey immunity might lead to a better pertussis shot, which Harvill, Merkel and their colleagues hope to develop over the next several years. “Clearly, the natural infection and whole-cell vaccine are stimulating some response besides the antibody response, and we’re trying to find out what,” Merkel says. —Tara Haelle February 2014, ScientificAmerican.com  13 ADVANCES S P O RT SCI E N CE

Center for Organismal Studies, Heidelberg University A rule of urban expansion could guide smarter growth Some of us age more gracefully than others, but perhaps no animal group does it better than the tiny freshwater polyps known as hydras. In 1998 one biologist ventured that the tentacled creatures, by continually renewing their own cells, may stave off aging altogether to achieve a kind of biological immortality. More recently, the species Hydra magnipapillata was one of a few dozen

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