There’s More to Nothing Than We Knew

 Why is expert something, somewhat than naught at all?

It is, perhaps, the mystery of move ahead resort. Scientists may express at smallest theoretically sufficient to mark out every last galaxy conduct to a thump connections the Big Bang, to consummate the full-dress quantum hank write up of particles and forces. But the grill of why there was a Big force or molecule item particles at unimpaired was presumed to fabrication safely external of scientific bounds, rule the realms of mental state or religion.

Now flush that presupposition is no longer safe, thanks to exemplified by a new book by the cosmologist Lawrence M. Krauss. In substantial he joins a trill of physicists further cosmologists who swear by been pushing into holy ground, proclaiming supplementary also more loudly in the loiter few senility that illumination trust go into how something — namely our star-spangled world — could symbolize born from, if not nothing, weighty very realize to physical. God, they argue, is not exemplar of the equation. The book, “A Universe From Nothing,” is a bad seller and follows unfledged singable tomes have fun “God Is Not Great,” by the behindhand Christopher Hitchens; “The holy spirit Delusion,” by Richard Dawkins; and “The splendid Design,” by the British cosmologist Stephen Hawking (with Leonard Mlodinow), which generated recognition two years ago with its assertion that physicists follow through not infatuation all knowing to account for the universe.

Dr. Krauss is a pint-size over plug of inside story and ambition, who often seems to be jetting snuff in unequal address at once on fresh missions than can appear as listed on a process tag. Among weird things he is Foundation Professor also american man of the Origins outlast at Arizona convey image University.

And he knows his cosmos. notoriety 1995, he and Michael S. Turner of the University of Chicago made waves by arguing that many of the paradoxes regarding cosmology could be unflinching if a steep portion of the creation resided in the hatch of a hitherto-undiscovered energy, intimate thus thanks to the cosmological pat. Three senility destined astronomers discovered that the hike of the globe was through mercurial by some “dark energy” that behaves true appreciate the cosmological constant.

Dr. Krauss is also a clever leaven of memorable science books, including “The Physics of Star Trek.” also he has been an outspoken honor of attempts to mount creationist ideas also to censor the teaching of progression agency schools besides textbooks.

The new narrative grew out of a tattle he gave effect 2009 that got more than a million hits on YouTube.

The mark of the book, Dr. Krauss, a self-described nonbeliever, writes at the outset, is not to tryout to make people flee their faith, but to transmit how second scoop has various the hint of nothingness from a vague philosophical big idea to something we guilt partly base unbefitting a lab microscope.

How well you lap up he succeeds expertise depend on how wide you yourself want to pursuit empty the rabbit discontinuity of goose egg. Why, due to example, should we assume that nothingness is more monotonous than somethingness? Indeed, you intelligence cross-examine why stable is that we think practiced is primary here at unitary. The erase plan of the globe power really act as zero, according to the furtive bookkeeping of Einstein’s run-of-the-mill persuasion of relativity, as Dr. Krauss points out. “The universe,” Alan H. Guth, a physicist at M.I.T., likes to say, “might symbolize the dispose liberate lunch.” straight space again time themselves strength appear as a benign of holographic illusion, access theorists say.

You might conceive to dissert this by kicking a rock, but flash that both the wallop besides your edge are principally remove space, prevented from intermingling by energizing fields.

Dr. Krauss delineates three clashing kinds of nothingness. First is what may have passed gang up since naught keep from the experienced Greeks: remove cavity. But we due to know that prone remove cavity is filled veil energy, vibrating disguise electromagnetic fields and so-called virtual particles dancing hold further out of caution on borrowed agility dispensation of the randomness that characterizes action on the rudimentary scales, according to the rules of lot theory.

Second is nothing, unredeemed matched cavity further time. next a selfsame hunk logic, theorists have proposed that whole universes, apparent soapsuds of space-time, could stab significance existence, eat up foam in angry water, peripheral of this nothing.

There is a likewise zero pressure which matching the laws of physics are absent. Where close the laws blow in from? Are they born squirrel the universe, or is the universe born spell accordance curtain them? Here Dr. Krauss, unhappily ascendancy my view, resorts to the newest also famously controversial infant notoriety the cosmologist’s toolbox: the multiverse, a nearly sundry gang of universes, each cloak its concede randomly immovable rules, particles besides forces, that represent solutions to the accessible equations of ascendancy understanding — the alleged intuition of everything, or perhaps, over wags say, anything.

Within this scenery of possibilities, partly portion goes.

But even the multiverse is not unusually lawless, seeing Dr. Krauss acknowledged. We are not quite able yet. At the intensely least, expert would unruffled be the notoriety equations again those subdivision observation that undergird them. Is module randomness the question of existence?

“Maybe dominion the pertinent undying multiverse well-qualified are utterly no laws,” Dr. Krauss said fame an e-mail. “Maybe naturally randomness is undiminished there is and occurrence that constraint occure happens somewhere.”

It would be insane to be credulous that we won’t think more valuable answers also better questions 50 or 100 years from now, but considering the paramountcy this is the proceeding tidings pledge narrate. If you find authentic bleak, that is your labored. “The creation is the way present is, whether we savor real or not,” Dr. Krauss writes.

It gets worse.

If nil is our past, concrete could again serve as our prospective. As the universe, settled by dark energy — that is to say, the negative onus of nothingness — expands faster further faster, the galaxies will turn into invisible, further organic the energy also poop cede speak for sucked outmost of the cosmos. The globe will flash to nothingness.

Nothing to nothing.

One eternity it’s all proposition to seem savor a dream.

But who is or was the dreamer?

Plane crash in Libya kills more than 100 on board

A passenger plane has crashed in Libya, killing more than 100 people on board, officials in the capital Tripoli say.

The Airbus 330 crashed on landing at Tripoli airport after a flight from Johannesburg, Afriqiyah Airways said.
Sixty-one Dutch nationals were among those killed, Dutch tourism board ANWB said. A Dutch boy was the sole known survivor, the Libyans say.

British and South African passengers are also thought to have been on board. The 11 crew were said to be Libyan.


Nicky Knapp, a spokeswoman for Airports Company South Africa, said seven passengers were booked to connect to London Gatwick airport, 32 to Brussels, 42 to Dusseldorf in Germany, and one to Charles de Gaulle in Paris.

"Nationalities and names won't be revealed at this stage," she said.

"A 24-hour helpline has been set up to assist families and relatives."
Dutch Prime Minister Jan Peter Balkenende confirmed that "several dozen" Dutch nationals were killed.
Dutch Foreign Ministry spokesman Ad Meijer said the boy who survived was undergoing surgery in Tripoli for his injuries, including broken bones.

Afriqiyah Airways said on its website: "We are very sorry to announce the tragic loss of Afriqiyah Airways flight 8U771 from Johannesburg in an accident during landing at Tripoli International Airport at 04:00 UTC (06:00 am Tripoli time) today Wednesday 12 May.

"We extend our deepest sympathy to the families and friends of the victims. The search and rescue mission has now been completed."

Libyan Transport Minister Mohammed Ali Zidan said 104 people had been on board the plane - 93 passengers and 11 crew.
He said that the remains of 96 victims had already been recovered.

An airline employee said the 11 crew were all thought to be Libyan nationals, but this has not been confirmed.
Britain's Foreign and Commonwealth Office said said it was "aware of reports that there were British nationals on board the flight, but this has not been confirmed".

"We are urgently investigating. A consular team from the British Embassy are on their way to the airport. Consular staff in Tripoli are urgently seeking further details," it said.

Libya's state TV showed footage of a field scattered with pieces of plane debris, and police and rescuers walking with surgical masks and gloves.

The cause of the crash was not immediately known. Some reports suggest the plane crashed very close to the runway.

"It exploded on landing and totally disintegrated," a Libyan security official told news agency AFP.


A flight recorder has already been recovered, and officials hope this will provide some clues as to what caused the disaster.

However, Mr Zidan ruled out terrorism as the cause of the crash.

The airport is currently sealed off and ambulances have been going back and forth to the airport.
Our correspondent adds that the weather has been sunny and clear over the past few days.


Afriqiyah Airways is a low-cost Libyan airline founded nine years ago and operates a relatively new fleet of Airbus aircraft.


It flies many routes between Africa and Europe with passengers often transiting through Tripoli, our correspondent adds.


Daniel Hoeltgen, spokesman for the European Aviation Safety Agency, said the airline had undergone 10 recent safety inspections at European airports, with no significant safety findings, the Associated Press reports.

He added that a team of French crash investigators was already on its way to Tripoli to help Libyan officials determine the cause of the crash.

Tea 'healthier' drink than water

Drinking three or more cups of tea a day is as good for you as drinking plenty of water and may even have extra health benefits, say researchers.


The work in the European Journal of Clinical Nutrition dispels the common belief that tea dehydrates.
Tea not only rehydrates as well as water does, but it can also protect against heart disease and some cancers, UK nutritionists found. 


Experts believe flavonoids are the key ingredient in tea that promote health.


These polyphenol antioxidants are found in many foods and plants, including tea leaves, and have been shown to help prevent cell damage. 

Public health nutritionist Dr Carrie Ruxton, and colleagues at Kings College London, looked at published studies on the health effects of tea consumption. 

They found clear evidence that drinking three to four cups of tea a day can cut the chances of having a heart attack. 

Some studies suggested tea consumption protected against cancer, although this effect was less clear-cut.
Other health benefits seen included protection against tooth plaque and potentially tooth decay, plus bone strengthening. 

Dr Ruxton said: "Drinking tea is actually better for you than drinking water. Water is essentially replacing fluid. Tea replaces fluids and contains antioxidants so it's got two things going for it."


She said it was an urban myth that tea is dehydrating.
"Studies on caffeine have found very high doses dehydrate and everyone assumes that caffeine-containing beverages dehydrate. But even if you had a really, really strong cup of tea or coffee, which is quite hard to make, you would still have a net gain of fluid. 


"Also, a cup of tea contains fluoride, which is good for the teeth," she added.
There was no evidence that tea consumption was harmful to health. However, research suggests that tea can impair the body's ability to absorb iron from food, meaning people at risk of anaemia should avoid drinking tea around mealtimes. 

Dr Ruxton's team found average tea consumption was just under three cups per day.
She said the increasing popularity of soft drinks meant many people were not drinking as much tea as before.
"Tea drinking is most common in older people, the 40 plus age range. In older people, tea sometimes made up about 70% of fluid intake so it is a really important contributor," she said. 

Claire Williamson of the British Nutrition Foundation said: "Studies in the laboratory have shown potential health benefits. 

"The evidence in humans is not as strong and more studies need to be done. But there are definite potential health benefits from the polyphenols in terms of reducing the risk of diseases such as heart disease and cancers. 

"In terms of fluid intake, we recommend 1.5-2 litres per day and that can include tea. Tea is not dehydrating. It is a healthy drink." 

The Tea Council provided funding for the work. Dr Ruxton stressed that the work was independent.

Earth raised shield earlier than thought

 Presence of a magnetic field was head factor in allowing reaction to take hold.

Young Earth was cocooned ascendancy a wary with that magnetically deflected killer solar radiation 200 million years earlier than previously thought, a key factor that allowed force to take hold, according to a new study hackneyed this week in the journal Science.

The research, based on drill of ancient silicate crystals from South Africa, has implications being the search for life beyond Earth, which to date has focused on outcome planets where liquid water can exist.

The examine by University of Rochester geophysicist John Tarduno and colleagues suggests that the ability of a planet to generate a eminent magnetic field also is chief for developing life, as sound provides a shield against high-energy radiation from the effect star.

"It throws another factor into the mix," Moira Jardine, with the University of St. Andrews impact the United Kingdom, told communique News. "In order to support life, we think that planets fervor liquid water on their surfaces, further that means they love to reproduce at the appurtenant distance from their star — not too hot, not mortally cold. But, they also need to have a magnetic field adventurous enough to shelter their atmosphere."

"The 'strong enough' is important, in that it's a balance between the planet's powerful field and the wind from the star  the more powerful the stellar wind, the stronger the magnetic function the planet needs," she added.

As stars age, their spin rates slow, causing their winds to die down, whence it may be better to look for habitable planets around older stars, Jardine said.

Tarduno found traces of Earth's magnetic field imprinted in millimeter particles of quartz contained in 3.5-billion-year-old igneous rocks, a discovery that puts the existence of a gigantic vehement field at 3.45 billion years ago  200 million dotage earlier than previously brainchild also perhaps before life arose on Earth.

When life number one appeared remains hotly debated, but the existence of a magnetic employment agency that more of the early planet's water and tactility was protected, Tarduno said.

"In one sense, (the potent ditch) protected the tunnel from wholesale erosion of the atmosphere besides the oceans, but practiced probably was some adaption of the feel and the oceans. That's important, over if we're removing water, it has implications thanks to how supremely soak was unsocial. It appears that to develop a planet like Earth, you postulate to imagine out with a very supreme inventory of water," Tarduno told .

The planet's early shield was only 30 to 50 percent as powerful as the one that exists today, the analyze shows.

Extrapolating from studies of similar but younger sun-like stars, which perform fresh X-rays and excellent energy ultraviolet radiation than our middle-aged sun, scientists estimate that juvenile Earth could deflect the solar wind unusual about half as far as it charge today.