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Study Shows How We Evolved Different Personalities

November 13, 2008 | User rating: 3.9 / 5 after 45 vote(s) | User comments: 13

(PhysOrg.com) -- Although members of the same species share more than 99 percent of their genetic makeup, individuals often have small differences, such as in their appearance, susceptibility to disease, and ...


Maxwell's demons may drive some biological systems

September 10, 2008 | User rating: 4.5 / 5 after 41 vote(s) | No comments yet

(PhysOrg.com) -- According to the second law of thermodynamics, entropy always increases. For example, two bodies of different temperatures, when brought into contact, will eventually mix together to result in a uniform temperature. ...


Tribal war drove human evolution of aggression

September 09, 2008 | User rating: 3.7 / 5 after 64 vote(s) | User comments: 51

Wars are costly in terms of lives and resources – so why have we fought them throughout human history? In modern times, states may fight wars for a number of complex reasons. But in the past, most tribal wars were fought ...


Exotic Chameleon Spends Most of its Life as an Egg

July 11, 2008 | User rating: 4.8 / 5 after 27 vote(s) | User comments: 3

(PhysOrg.com) -- Scientists have discovered a chameleon species that spends a good two-thirds of its life inside an egg: Furcifer labordi lives about 8-9 months as an embryo, and has a post-hatching ...


Online Dating: Where Technology and Evolution Collide

June 26, 2008 | User rating: 3.6 / 5 after 30 vote(s) | User comments: 10

When searching for a soul mate, you might think that the more options, the better. But the rise of technology – notably, the Internet – has thrown a wedge in that perception.


Large mammal species live harder, die out faster

May 07, 2008 | User rating: 4.4 / 5 after 27 vote(s) | User comments: 3

Throughout Earth’s history, species have come and gone, being replaced by new ones that are better able to cope with life’s challenges. But some species last longer than others, while others may die out sooner ...


Researchers stumped by drug addiction paradox

April 16, 2008 | User rating: 4.4 / 5 after 108 vote(s) | User comments: 29

From chocolate and caffeine to nicotine and cocaine, many of our most addictive foods and drugs come from plant toxins. Considering that plants originally developed these toxins to deter herbivorous predators, ...


Can Athletic Uniform Color Determine Winners and Losers?

February 25, 2008 | User rating: 3.4 / 5 after 27 vote(s) | User comments: 1

It’s not uncommon for some athletes to have good luck charms, including the superstition that wearing certain colors may give them an edge on the competition. While some studies have found that, indeed, certain ...


The Best Way to Board a Plane

February 14, 2008 | User rating: 4.6 / 5 after 124 vote(s) | User comments: 18

Most airlines board passengers the same way, first filling the seats in the back of the plane, and then moving to the front. After a recent experience boarding a plane in this manner, Fermilab physicist Jason ...


Model of Easter Island Collapse Might Reveal Message for Today

February 11, 2008 | User rating: 4.3 / 5 after 86 vote(s) | User comments: 4

When a thriving civilization suddenly collapses, it’s often a mystery – and an ominous one, at that. For Easter Island circa 1000-1400 AD, experts believe it was a case of humans overexploiting their natural ...


How We Localize Surround Sound

January 09, 2008 | User rating: 4.3 / 5 after 32 vote(s) | User comments: 2

You're walking down a busy street, with cars and buses driving past and bits of conversations reaching your ears, when you hear someone call your name. You turn about 60 degrees to your left and look up to ...


Why Are Pygmies Short?

December 21, 2007 | User rating: 4.2 / 5 after 67 vote(s) | User comments: 11

The question is controversial. Traditional explanations attribute pygmies' small stature to minimizing caloric requirements and walking in dense forests. However, a new study by researchers at the University ...


'Kind and Gentle' Molecular Machine Could Operate at Near-Equilibrium

December 20, 2007 | User rating: 4.6 / 5 after 29 vote(s) | User comments: 2

Molecular machines – tiny machines made of molecules that do mechanical work – are usually thought to operate in a state of non-equilibrium. This makes sense, considering that macro-sized machines operate ...


Researchers Study Digg.com to Investigate Collective Attention

November 16, 2007 | User rating: 3.6 / 5 after 26 vote(s) | User comments: 1

In a world where millions of people are bombarded with thousands of messages daily, understanding how some messages become popular among large populations is vital for successful advertising, marketing and ...


Algae could generate hydrogen for fuel cells

November 13, 2007 | User rating: 4.6 / 5 after 117 vote(s) | No comments yet

For several decades, scientists have known that certain species of algae can produce hydrogen in anaerobic conditions. More recently, researchers have been trying to take advantage of this ability to produce ...


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