Thursday, 10 September 2009

d2/14 kol hol

/pst,prsnt,futr tearing self

apart

2/pal line post prnt dth


3/CLIB


4/NCP,NTIM

5/LAWYERS-GON CHOUDHURY,GHOSH-LKT

6/RELIANCE BROADBAND CONNECT USB

7/How To Improve Your Marriage Without Talking About It
Forget everything you've heard about frankness, sharing your feelings, getting him to express his. Research into the functions of the male mind makes it clear that discussion may be the fastest way to shut down communication. (Oh, you noticed that, have you?)
Add page to favoritesBy Barbara Graham from "O, The Oprah Magazine"
More On Oprah.com
 How to get through to your man
 Are you a nag? How to stop
 Before your next fight—read this!
 5 ways to avoid getting angry
 The secrets to a happy marriage
When I first heard about the book, I thought it was a gimmick. How to Improve Your Marriage Without Talking About It sounded like a title somebody's prankster husband dreamed up after a rocky couples' therapy session. When I mentioned it to Hugh, my own husband — who in 22 years of marriage has never once said, "Honey, we need to talk" — his face lit up like the Fourth of July. Needless to say, I was suspicious. What about the vast repertoire of communication skills women have spent decades perfecting? Were Patricia Love and Steven Stosny, the psychotherapists who coauthored the book, advising us to forget everything we've learned and rethink how we relate to our partners?

The answer is yes — and they're not kidding.

"The number one myth about relationships is that talking helps. The truth is, more often than not, it makes things worse," says Love, a tall, lean redhead with a down-home Texas twang and a generous smile. She is cofounder of the Austin Family Institute, and leads workshops around the country when she isn't making television appearances or cowriting books, including the best-selling Hot Monogamy.

"Talking about feelings, which is soothing to women, makes men physically uncomfortable," says Stosny, the Maryland-based author of You Don't Have to Take It Anymore and an expert on male aggression. "There's literally more blood flow to their muscles. They get fidgety, and women think they're not listening."

We're relaxing in the sunroom of my house in Washington, D.C., on a golden autumn morning. I learn that it was Stosny's research into the core emotional differences between the sexes that radically altered his thinking, as well as the way he works with clients. When he shared his findings with his friend and colleague Pat Love, they rang true to her, even though they flew in the face of the verbal problem-solving approach she'd been using for 30 years.

According to Stosny's analysis of several hundred human and animal studies, male and female responses to stress are distinct from birth. "When a baby girl hears a loud noise or gets anxious, she wants to make eye contact with someone, but a baby boy will react to the same sound by looking around, in a fight-or-flight response," he says. What's more, while newborn girls are much more easily frightened, boys have five times as many "startle" reactions, which are emotionally neutral but pump up adrenaline. Boys need to intermittently withdraw into themselves to keep from becoming overstimulated. These differences hold true for most social animals and correlate with our biological roles: The female's fear response is an early warning system that serves to detect threats and alert the males of the pack to danger.

As girls grow, they go beyond needing eye contact and refine a coping strategy identified by UCLA psychologists as "tend and befriend." If there's a conflict, girls and women want to talk about it. Boys and men, however, need to pull away. A man's greatest suffering, Stosny says, comes from the shame he feels when he doesn't measure up—which is why discussing relationship problems (i.e., what he's doing wrong) offers about as much comfort as sleeping on a bed of nails.
So, I wonder, does this explain why, when I reach out and tell Hugh I'm feeling isolated from him — on the assumption that this will foster closeness — he gets defensive or withdraws? Do my verbal attempts to reestablish intimacy make him feel inadequate? Is that why he gets that glazed look in his eye and is suddenly compelled to watch men tossing balls on TV?

Yes, yes, and yes, replies Love. And our responses aren't all in our heads. When a man feels shamed by a woman's criticism, his body is flooded with cortisol, a stress hormone whose effect is decidedly unpleasant. A woman experiences a similar cortisol rush whenever her husband shouts at her, ignores her, or otherwise does something that scares her and seems to threaten their bond. Love compares the sensation that accompanies the sudden release of cortisol to sticking your finger in an electric socket, followed by the sort of "sugar blues" crash that occurs after you polish off a few too many glazed doughnuts. "A cortisol hangover can last for hours in men and up to several days in women," Love says. "It's no wonder both sexes try to prevent it."

Okay, this makes sense, but if talking about relationships makes men twitchy and drunk on cortisol, then what's the alternative? Charades?

"It's the connection, stupid!" exclaims Love, quickly adding that it's not me personally she's calling stupid. "Everyone — men, women, myself included — needs to learn that before we can communicate with words, we need to connect nonverbally. We can do that in simple ways, through touch, sex, doing things together. The deepest moments of intimacy occur when you're not talking."

Stosny puts it this way: "We need to stop trying to assess the bonding verbally and instead let the words come out of the bonding." Interestingly, he adds, "When couples feel connected, men want to talk more and women need to talk less, so they meet somewhere in the middle. Being aware of the fear-shame dynamic helps."
To Improve Your Marriage Without Talking About It
Add page to favorites
(Continued)
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More On Oprah.com
 How to get through to your man
 Are you a nag? How to stop
 Before your next fight—read this!
 5 ways to avoid getting angry
 The secrets to a happy marriage
To illustrate the point, Love tells the story of an afternoon when she and her husband were lying in bed after showering. "I was wondering if he'd initiate sex, when all of a sudden in my mind I crossed over to his side of the bed and got a sense of what it was like to be him, never knowing if he's going to be accepted or rejected. It was terrifying. I understood then how deeply ashamed that must make him feel," she recalls. "It was an epiphany that changed my life." She immediately began emphasizing compassion in her work with clients, and has come to believe — as does Stosny — that it's even more crucial to the success of a long-term relationship than love.

The tricky part is that men and women must empathize with vulnerabilities they don't feel to the same degree — namely fear and shame. To do this requires what the authors call binocular vision, in which each partner makes a conscious effort to consider the other's point of view. "The problem is that when you're angry, you're wrong even when you're right because you can't see the other person's perspective," Stosny says. "That's when you lose the thing you long for most, the connection."
Okay, I get it: Connection rules. But it's hard to imagine most people being capable of reaching out to their partners in the heat of an argument. Love and Stosny acknowledge that it's a tall order. Still, they say, for couples to productively address the hurt that underlies anger, it helps to have a previously agreed-upon signal such as a hand gesture to keep disagreements from spiraling out of control. This doesn't mean they should try to ignore their feelings, but instead find a way to convey that the other person matters more than whatever they're resentful or anxious about—and then talk. The beautiful part, Love says, is that "it takes only one person to make the gesture. The partner will feel the impact, even if he or she can't drop the anger right at that moment."

Admittedly, this approach is most effective for couples in a precrisis state, Stosny says, "when there's still time for the man to step up to the plate and stop withdrawing or being reactive, and for the woman to understand that her husband really does want to make her happy and to stop being so critical. Men are better able to stay in the room and listen to women if they don't think they're being blamed for their distress."

But ultimately, Love adds, "couples have to decide that the relationship is more important than all those things they do that annoy each other."

"Even when Hugh throws his sopping wet towel on the bed, forgets to put gas in the car, or stares into space when I try to tell him something that really matters to me?" I ask, only half joking.

"If you give him positive reinforcement instead of criticizing him, he'll start doing more of the things you want him to do," Love says.

The next night over dinner, I give it a whirl. "I love it when you put gas in the car and hang up your wet towel," I say. He looks at me like I've gone off the deep end. "What's up?" he asks suspiciously. "Why are you being so nice?"

But a few days later when I'm distraught over a potentially scary mammogram report and he jumps in too quickly to reassure me that everything will turn out fine (it does), I decide to try out the binocular vision that Love and Stosny recommend. That's when I see that Hugh feels like a failure because he wants to make things better and he can't.

So instead of my usual knee-jerk irritability at what I perceive as his lack of sensitivity, I say, "I'm terrified and I just need you to listen." Which he does, patiently, lovingly. After I've finished reciting my laundry list of fears, he holds me close and neither of us says anything for a long time. We don't need to.

It's the connection, stupid!

More from MSN Lifestyle Site Search: For additional content on communication techniques, click here.

By Barbara Graham from O, The Oprah Magazine © 2009 Harpo Productions, Inc. All Rights Reserved.
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7/etrom-evrythng rns on mney



8/shkti-pal dth care



9/

ADHD=NABC

ADHD brain chemistry clue found


Levels of ADHD have been rising
US researchers have pinned down new differences in the brain chemistry of people with attention deficit hyperactivity disorder (ADHD).
They found ADHD patients lack key proteins which allow them to experience a sense of reward and motivation.
The Brookhaven National Laboratory study appears in the Journal of the American Medical Association.
It is hoped it could help in the design of new ways to combat the condition.

For far too long there has been an assumption that children with ADHD are deliberately wilful
Andrea Bilbow
ADDISS
Previous research looking at the brains of people with ADHD had uncovered differences in areas controlling attention and hyperactivity.
But this study suggests ADHD has a profound impact elsewhere in the brain too.
Researcher Dr Nora Volkow said: "These deficits in the brain's reward system may help explain clinical symptoms of ADHD, including inattention and reduced motivation, as well as the propensity for complications such as drug abuse and obesity among ADHD patients."
The researchers compared brain scans of 53 adult ADHD patients who had never received treatment with those from 44 people who did not have the condition.
All of the participants had been carefully screened to eliminate factors which could potentially skew the results.
Dopamine pathway
Using a sophisticated form of scan called positron emission tomography (PET), the researchers focused on how the participants' brains handled the chemical dopamine, a key regulator of mood.
In particular they measured levels of two proteins - dopamine receptors and transporters - without which dopamine cannot function effectively to influence mood.
ADHD patients had lower levels of both proteins in two areas of the brain known as the nucleus accumbens and midbrain.
Both form part of the limbic system, responsible for the emotions, and sensations such as motivation and reward.
Patients with more pronounced ADHD symptoms had the lowest levels of the proteins in these areas.

It suggests that teachers need to make sure that school tasks are interesting and exciting, so that children with ADHD are motivated to remain interested
Professor Katya Rubia
Dr Volkow said the findings supported the use of stimulant medications to treat ADHD by raising dopamine levels.
The findings also support the theory that people with ADHD may be more prone to drug abuse and obesity because they are unconsciously attempting to compensate for a deficient reward system.
Andrea Bilbow, of the ADHD charity ADDISS, said the study might help convince people who argue that ADHD is more to do with bad parenting than any concrete medical difference.
She said: "The findings of this new research will go a long way to helping us understand the presentation of symptoms but more importantly it may give teachers more of an idea of what interventions should be used in the classroom in order to accommodate children with ADHD.
"For far too long there has been an assumption that children with ADHD are deliberately wilful which has led to mismanagement and ultimately permanent exclusions from school."
Professor Katya Rubia, of London's Institute of Psychiatry, said: "This study widens our horizons. It shows that ADHD is not just about abnormalities in the attention systems of the brain, but also abnormalities in the motivation and emotion centres.
"It suggests that teachers need to make sure that school tasks are interesting and exciting, so that children with ADHD are motivated to remain interested."




//////////////////Irlen Syndrome is a possible explanation for the average to gifted
student who avoids reading or cannot read and for the
learning-disabled student who struggles with reading. Helen Irlen, a
school psychologist, worked with college students with reading
difficulties. The students had average to above-average intelligence.
They reported symptoms that occurred when reading that no one had
identified before such as: migraines and headaches, falling asleep,
words switching around, print moving or vibrating, the text becoming
3D, the brightness of the page hurting their eyes, print becoming
blurry, and words blending into each other. Irlen found that placing
colored overlays over the reading material improved the student's
comprehension, fluency, comfort, and attention.




/////////////////////Severed Lizard Tail Has a Mind of Its Own
By LiveScience Staff
posted: 09 September 2009 07:10 am ET
Buzz up!
Comments (20) | Recommend (6)

The tail of a leopard gecko (Eublepharis macularius), has a mind of its own. Once shed from the lizard's body, the tail completes complex jumps and lunges. Credit: Tim Higham
Full Size
1 of 1
It's amazing enough that lizards can shed their tails as a decoy for predators and entertainment for young boys. But a new study of geckos documents an incredible set of acrobatics that these severed tails perform.

Though it might seem as though a lizard loses its tail because it's pulled off, in fact the lizards control the severing, apparently when they sense they're about to become dinner.

The tails exhibit not only rhythmic but also complex movements, including flips, jumps and lunges, after the tails are shed, Anthony Russell of the University of Calgary and Tim Higham of Clemson University report in the journal Biology Letters.

No previous study had quantified movement patterns of the tail by examining the relationship between such patterns and muscular activity.

The new study shows that the signals responsible for movements of the shed tail begin at the very far end of the tail, in a portion of the spinal cord, indicating that there is a control center located there that is likely overridden by higher centers until the tail is shed, at which point its circus-like performing potential is realized.

The findings suggest a model for studying the complex functions of the human spinal cord and the effects of spinal cord injuries.

"Much is known about the ecological ramifications of tail loss, such as distracting predators, storing energy reserves and establishing social status but little is known about the pattern and control of movement of automized gecko tails," Russell said. "What we've discovered is that the tail does not simply oscillate in a repetitive fashion, but has an intricate repertoire of varied and highly complex movements, including acrobatic flips up to 3 centimeters [1.1 inches] in height."

But how?

"An intriguing, and as yet unanswered, question is what is the source of the stimulus that initiates complex movements in the shed tails of leopard geckos," Higham said. "The most plausible explanation is that the tail relies on sensory feedback from the environment. Sensors on its surface may tell it to jump, pivot or travel in a certain direction.

Another idea is that multiple networks of neurons in the tail's spinal cord fire at different times, causing these outbursts of complex activity.

And why?

The tail tumbles could serve as first-rate decoys.

"When the tail is doing flips and everything else that could enhance the distraction of the predator so the lizard can get away. If the tail moves in a really complex way, the predator would try to get the tail and when it can't get it, would go away," Higham told LiveScience. "Then the lizard could come back and eat the tail." That way, the lizard could gain back energy lost when shedding its tail, which stores a lot of fat, he added.





////////////////////Blacksmiths In 70,000 BC?Early modern humans living on the southern Africa coast employed pyrotechnology, the controlled use of fire, 72,000 years ago, to increase the quality and efficiency of their stone tool manufacturing process, according to a report in Science.The international team of researchers deduces that "this technology required a novel association between fire, its heat, and a structural change in stone with consequent flaking benefits." Further, they say their findings ignite the notion of complex cognition in early man.If their findings hold up, it could mean humans' ability to solve complex problem




//////////////////

Monday, 7 September 2009

TIGER TIGER BURNING BRIGHT

Tigers are 'brainier' than lions
As the King of the Jungle, the lion may have the brawn, but it is the tiger that has the brains, claim scientists.

By Richard Alleyne, Science Correspondent
Published: 12:31PM BST 02 Sep 2009

Photo: GETTY
Researchers have discovered that the tiger has a far bigger brain than its big cat rival, even though it is often seen as lower down the food chain.
A team of zoologists at Oxford University compared the brain cavity in the skulls of both animals and found tigers are 16 per cent bigger than lions, leopards and jaguars.



//////////////////

RDING DWKNS-EVOLN-GSOE

CDS LOG


RD-BK-DAWKINS-EVOLN GSOE

//////////////////UP FRM WATER


/////////////////////BACK TO WATER -WHALE


//////////////////////HIPPO-WHALE NR COUSINS



//////////////////////LUCY,TAUNG CHILD-AUSTRALOPETHICUS



///////////////////////////TURKANA BOY -1.6 MYA


/////////////////SINGLE CELL TO A COMPLICATED BODY-U DID IT URSELF IN 9 MO



///////////////////EMBRYOLOGICAL RECIPE LIKE A CMPTR PROGRAM


///////////////////BOTTOM-UP PROCEDURE



/////////////////////NEURULATION



//////////////////INVAGINATION IN A SHEET OF CELLS



/////////////////BLASTULA GASTRULATING



///////////////////AUTO-ORIGAMI BY WHICH PR CHAINS FOLD AND COIL IS RULED BY LAWS OF CHEM ATTRACTN,AND LAWS DETERMINING THE ANGLES AT WHICH ATOMS BIND TO EACH OTHER



//////////////////////LIVING CELL IS A LARGE CHEM LAB


/////////////////////////WHETHER OR NOT A GIVEN GENE IS TURNED ON IN A GIVEN CELL AT A GIVEN TIME IS DETERMINED ,OFTEN VIA A CASCADE OF OTHER GENES CALLED SWITSH GENES OR CONTROLLER GENES ,BY THE CHM ENV OF THE CELL



////////////////////////THERE IS NO OVERALL PLAN OF DVPT,NO BLUEPRINT,NO ARCHITECTS PLAN,NO ARCHITECT.THE DVPT OF THE EMBRYO,AND ULTIMATELY OF THE ADULT,IS ACHIEVED BY LOCAL RULES IMPLEMENTED BY CELLS,INTERACTING WITH OTHER CELLS ON ALOCAL BASIS



/////////////////THE RULES ARE LOCAL,LOCAL,LOCAL


///////////////////SPECIATION-GEOGRAPHICAL ISOLATION


//////////////////////CONTINENTAL DRIFT AFFECTED VARIETY AND SPECIATION



//////////////////////////BIOGEOGRAPHIC EVIDENCE FOR EVOLN


/////////////////////////////THE TREE OF COUSINSHIP


///////////////////////////SEXUAL SHUFFLING OF GENES IN AGENE POOL IS LIKE BORROWING AND SHARING OF GENETIC IDEAS


////////////////////PLACENTAL AND MARSUPIAL OPP NOS



/////////////////DNA HYBRIDIZATION COMPARES GENES AT A MOLECULAR LEVEL


////////////////////HODGKINS LAW FOR GENETICS-LIKE MOORES LAW IN CMPTRS




////////////////////////////THE HILLIS PLOT



//////////////////////////////5% GENES A RE USED AND READ,REST ?NONSENSE


//////////////////////////HX WRITTEN ALL OVER US



////////////////The main 7 tectonic plates around the world are: the Eurasian plate; African plate; Indo-Australian plate; Pacific plate; North American plate; South American plate; and the Antarctic plate.



//////////////////////////////////////WARM BLOODED-MAMMALS AND BIRDS-ABY TO KEEP TEMP CONSTANT



////////////////////////////ARMS RACES AND EVOLUTIONARY THEODICY



/////////////////////////THE SOLAR ECONOMY OF NATR


/////////////////////////UPHILL CHEMISTRY OF BIOLF


////////////////////////////SOLAR ENERGY CAPTURED BY CHLOROPLASTS IS AT THE BOTTOM OF THE FOOD CHAIN


/////////////////////////////////EVOLN ECONOMY -UNLIKE PLANNED ECONOMY,EG TREES ARE AWASTE



///////////////////////////////

WDC VLLG HADIPPA KOL HOLS

///////////UP ON ORI TXS



///////////////PAIN OF DUALITIES-Chapter II: Sankhya Yoga

(Krishna speaking to Arjuna)
II.38. Having made pleasure and pain, gain and loss, victory and
defeat the same, engage thou n battle for the sake of battle; thus
thou shalt not incur sin.
COMMENTARY: This is the Yoga of equanimity or the doctrine of
poise in action. If anyone does any action with the above mental
attitude or balanced state of mind he will not reap the fruits of
his action. Such an action will lead to the purification of his
heart and freedom from birth and death. Oe has to develop such a
balanced state of mind through continuous struggle and vigilant
efforts.



/////////////////SLEEP=In humans, the brain constitutes, on average, just 2 percent of total body weight but consumes 20 percent of the energy used during quiet waking, so these savings have considerable adaptive significance. Besides conserving energy, sleep invokes survival benefits for humans too — "for example," said Siegel, "a reduced risk of injury, reduced resource consumption and, from an evolutionary standpoint, reduced risk of detection by predators."



////////////////

Sunday, 6 September 2009

DWKNS-EVOLN GRTST SHW ON ERTH

FACT 0F EVOLN-ALL LIVING THINGS ARE COUSINS



////////////THEORY OF EVOLN=NS



//////////GEOLOGICAL DEEP TIME VS HUMAN LIFESPAN



///////DEAD HAND OF PLATO-OBSTACLE OF ESSENTIALISM



////////////SCULPTING THE GENE POOL



///////////////NEODARWINIAN SYNTHESIS




///////////COMPUTER BIOMORPHS



////////////////PRIMROSE PATH TO MACROEVOLN



//////////////////INSECTS WERE FIRST DOMESTICATORS



//////////////FLOWER BRIBES NECTAR FOOD FOR POLLINATORS



///////////////CONVERGENT EVOLN EG EYES OF FLY/MAMMALS


/////////INSECT POLLINATION HAS IMPROVED ECONOMY OVER WASTEFUL WIND POLLINATION



////////////INSECTS BREED FOR FLORAL BEAUTY



///////////YOU R MY NATL SELECTN



////////////HEIKA KABUKI LOOKING CRAB WERE LESS EATEN SO SURVIVED MORE



/////////////HUMANS BREED ATTRACTIVE ROSES THEREBY PRESERVING GENE POOL OF ATTRACTIVE FEATURES=ARTIFICIAL SELECTION


//////////DOMESTICATION SHIELD BREEDS FROM RISK EG UDDERFUL COW CANT OUTRUN A LION



/////////WOLVES PACK HUNTERS VS EARLY VILLAGE DOGS SCAVENGERS WITH SHORTER FLIGHT DISTANCE



///////////////BOLLYWOOD KA K-MANIA



//////////THEN HUMANS BRED DOGS FOR TAMENESS



///////////NATR AS THE SELECTING AGENT



////////////SILENCE AND SLOW TIME


//////////TREE RINGS


////////////RADIOACTV DECAY CLOCKS



////////////HEAD FOR THE HILLS THEORY



////////////CARBON DATING



////////////RANDOM MUTATIONS FOLLD BY NON RANDOM NS


//////////////FINISH DOSE OF ABX ELSE LEAVE BEHIND SEMI-RES BACTERIA MUTANTS


////////////SHOW ME UR INTERMEDIATES


/////////////BIGGEST FOSSIL GAP PRE CAMBRIAN



//////////PRE CAMBRIAN SOFTBODIED ANIMALS WERE NOT FOSSIL MATERIAL



//////////////GAP IN FOSSIL RECORD EARLIER CALLED MISSING LINK



/////////////////////////SHOW ME UR CROCODUCK



/////////////////FOR 6 PACK ABS NEED 3 HRS OF EXERCISE



////////////MONKEYS DID NOT EVOLVE FROM EARTHWORMS,BOTH SHARE A COMMON ANCESTOR=BSACA



/////////////

NIMBY

MOSES BASKET S AND NIMBY S


//////////////BYSTANDER EFFECT


//////////EVERY PENNY HELPS CHARITY BOX GETS MOST CHARITY



//////////INTERVIEW-MOST IMP IS PLEASANTNESS,EG TU,ETC


//////////////Eggs: The Other Protein

Eggs may not pack the protein punch of most meats, but they're still a great source of protein because more of their fat is monounsaturated. What's more, the yolks are a great source of easily-absorbable lutein, an important antioxidant (also found in spinach and other green vegetables) that's great for your eyes and your skin.
By the way, the theory that eggs increase cholesterol levels in the bloodstream has been thoroughly debunked. One recent study found no difference in heart disease risk between those who ate one egg a week and those who ate one a day. Another study concluded that eating two eggs a day for six weeks had no impact at all on cholesterol levels. The key is to prepare your eggs healthfully — large amounts of butter, cheese, and cream in the company of sausage and bacon aren't good for your cholesterol level or your waistline.



/////////////PERSUADE BY KISS-KEEP IT SIMPLE AND STRAIGHT



/////////////ASK FOR A SMALL FAVOUR,LATER MORE LIKELY TO HELP OUT



///////////Archives of Internal Medicine, men are more likely to benefit from walking or cycling to work than women. Men who walk or cycle to work are less likely to be obese and are at lower risk of cardiovascular disease than men who don't have an active commute. The same is not true for women. Although women who walk or cycle to work are fitter than those who don't, they are not less likely to be obese, and they are not at lower risk of cardiovascular disease.

'It seems that women need to commute a bit further and at a higher intensity of exercise in order to see weight and cardiovascular benefits of active commuting.'




////////////////SMALL FOLLIES IMPROVE LIKEABILITY-EG CONSTIPN -MRI INCDNT



/////////////GOSSIP EFFECT-WHATEVER POS/NEG U GOSSIP ABT O PPL COMES BACK TO LABEL U



//////////////String Theory is just science fiction as many other theories. Forcing mathematics and imagination to explain phenomena with no possible experiments to corroborate is exactly like a very elegant and thoughtful fairy tale.



//////////////GALILEO-TELESCOPE-400 YRS ON



///////////AM=FINDERS KEEPERS



///////////////An early start to the Earth's biosphere
by Physics Today
Nature: The Cambrian period, roughly 500 million years ago, was marked by a seeming explosion of diverse multicellular organisms. For the past 10–15 years, the carbon-isotope signature in Precambrian limestone has been studied for clues to what prompted this burst of life.

Wild fluctuations in carbon-isotope values during the late Precambrian were interpreted as sudden, drastic changes in the global carbon cycle, such as methane releases or glaciations that could have altered ocean conditions to such extremes that an evolutionary burst was plausible. But new analysis suggests that photosynthetic organisms spread over land earlier than previously thought, and the subsequent rise in atmospheric oxygen was what triggered the Cambrian explosion



//////////////////////////////////////////////////Do clouds come from outer space?
by Physics Today
ScienceNOW: Most of Earth's clouds get their start in deep space. That's the surprising conclusion from a team of researchers who argue that interstellar cosmic rays collide with water molecules in our atmosphere to form overcast skies.




///////////////