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General Science news 1234

New York tech start-up develops DNA amplifier the size of a paper clip

November 21, 2005 | User rating: 4.3 / 5 after 40 vote(s) | No comments yet

Crime labs and operating rooms that use deoxyribonucleic acid (DNA) testing to prosecute criminals and heal patients could get the job done cheaper and with less equipment if a New York company's first-generation ...


Look ma, no hands!

November 01, 2005 | User rating: 4.6 / 5 after 39 vote(s) | No comments yet

A few years ago scientists managed to wire a monkey’s brain to a robotic arm. The monkey learned to manipulate the arm simply ...


Machines making other machines: new twist on self-replication

October 03, 2005 | User rating: not shown ( 2 vote(s) ) | No comments yet

How can we best build self-replicating machines? The past few decades have witnessed self-replicating virtual automata, ranging from the benign Game of Life by Conway to malicious computer viruses. Self-replicating physical ...


Online Dating: Where Technology and Evolution Collide

June 26, 2008 | User rating: 3.6 / 5 after 26 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 106 vote(s) | User comments: 28

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, ...


The Best Way to Board a Plane

February 14, 2008 | User rating: 4.6 / 5 after 120 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 80 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 65 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 115 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 ...


Shoppers' Spending Habits Follow Well-Known Economic Law

October 26, 2007 | User rating: 4.2 / 5 after 73 vote(s) | No comments yet

By analyzing 100 million receipts from 1,000 Japanese am/pm convenience stores, researchers have discovered a strong economic inequality among shoppers. Among their findings is that the top 25% and 2% of the ...


Plants live, die according to their size

October 22, 2007 | User rating: 4.4 / 5 after 40 vote(s) | User comments: 2

Plants self-regulate their populations to maintain stability and optimize their lives, with the lengths of their lives directly related to their mass, a recent study has found. Further, a single scaling power ...


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