A 20-foot section of the Berlin Wall will return to Manhattan this Summer

A generation ago, in Berlin, citizens 1) have attacked had attacked will attack attacked would attacked the wall with sledgehammers. Today, in a New Jersey warehouse, conservators are reattaching flakes of paint to the wall with daubs of adhesive, so tiny they must be applied by syringe.

It is the strange fate of this 20-foot section of the Berlin Wall, which once separated West from East along the line of Waldemarstrasse, that it 2) must is has had should now be found resting horizontally on timber- frame supports, under nearly surgical care.

3) Whilst Whether Even Ever Always in a vast storeroom, the grotesque faces painted on the wall in the 1980s by the artists Thierry Noir and Kiddy Citny still alarm a viewer with their anger. The graffiti, of course, was only on its western side. No one but security guards could get 4) somehow some place somewhere anywhere anyhow near the wall in East Berlin, not across a "death strip" that was fenced, mined, trenched, patrolled by attack dogs and watched from sentry towers.

In 1990, a year after the wall 5) fell felt fled flew flown the section from Waldemarstrasse was 6) put on put up put back put forward put aside display in Manhattan, in the plaza behind 520 Madison Avenue at 53rd Street. The enormous artifact - all 33,000 pounds of it - had been bought by Jerry I. Speyer, 7) principal chef foreman chairman master of the Tishman Speyer real estate which owns the building.

Then, last September, without notice, it 8) has disappear disappeared disappear had disapeared have disappeared . At first, Tishman Speyer said nothing publicly about what had happened. But last week, the company allowed a photographer 9) seeing to see looking to look to watch the wall as it neared the completion of a painstaking conservation job.

"Unfortunately, it wasn’t as durable as we thought, and it really required a considerable conservation effort," Mr. Speyer said.

The wall 10) is will must should might to return to 520 Madison Avenue by midsummer. This time it will stand in the lobby, where it will be on public view, Mr. Speyer said.

Demand for rubber threatens forests

Tropical forests are being cleared for rubber plantations, putting endangered birds, bats and primates at risk say UK researchers.

By 2024, up to 8.5 million hectares of new rubber plantations will be needed to 11) rely see reply comply meet demand, they report in Conservation Letters.

Species such as the endangered white-shouldered ibis, yellow-cheeked crested gibbon and clouded leopard could 12) loose loosen lose have lost lost precious habitat, said the team led by Eleanor Warren-Thomas. There’s a lot we can do as scientists and the public to make rubber production 13) more such so much many wildlife-friendly:

”The tyre industry consumes 70% of all natural rubber grown, and 14) height rose risen hiring rising demand for vehicle and aeroplane tyres is behind the recent expansion of plantations. But the impact of this is a loss of tropical biodiversity," she said.

Eight-point-five 15) millions million millions of million of a million hectares is about the size of the land area of Austria. Rubber is the most rapidly expanding tree crop within mainland Southeast Asia.

Concern has been 16) growing creasing cracking climbing winding among conservationists that switching land use to rubber cultivation can harm soil, water and biodiversity.

Another study found that numbers of bird, bat and beetle species can decline 17) with to as by over up to 75% in forests that have been converted to rubber. The researchers, from UEA and the University of Sheffield, are calling 18) up to at on out tyre manufacturers to support initiatives such as certification schemes.

Commenting on the study, Dr Matthew Struebig of the University of Kent, UK, said certification standards 19) to for of with off the rubber industry were key to protecting forests:

"There’s a lot we can do as scientists and the public to make rubber production more wildlife-friendly," he said. "It can range from agro-forestry - mixing rubber with other trees - to retaining patches of natural vegetation along rivers or in small conservation set-asides, as is done in organic farming in Europe. The onus is on the rubber industry to develop a certification standard that is credible, for the public to support that, and for scientists to help develop ways to manage the rubber crop in an environmentally 20) friendly goodly like nice chummy way.

Google reveals computer on a stick

Google has announced new Chrome-powered computers, which are 21) jet net let bet set to target budget-conscious consumers and schools.

"This is a booming sector of the 22) stall market shop store supermarket at the moment," commented Chris Green, a tech analyst at the Davies Murphy Group consultancy. "With the falling cost of hardware, schools 23) are looking to look looks looked will look to families to equip kids with their own computers - the idea of BYOD [bring your own device to class].

"This has prompted manufacturers to create low-cost entry-level 24) outlooks laptops desks wires plugs that parents then buy for their children as well as themselves."

Google has pledged not to 25) display demonstrate manifest cover show off ads to children that use the education-related software it provides for its Chrome platform. But one expert said the company still hoped to financially benefit in the long-term.

"The key goal here for both Google and Microsoft is to put their brand and services 26) on over up below out there in front of kids to 27) construe construct build make do loyalty at a very early age," said Ronan de Renesse, a consumer technology expert at the Ovum consultancy.

"It’s also a good way to to see whether or 28) yes so not if how to extend these types of devices to emerging markets, where they could be used outside education by people with very low 29) throaway disposable recyclable renewable available incomes."

"We hope to make these 30) widely narrowly strangely notoriously lowly available in the future, however we have nothing more to announce at this time," said a spokeswoman.

Why everyone may soon have a personal air vehicle

We are going to have personal air vehicles that are both cars and planes; at least that’s Missy Cummings’s vision of the future. It’s basically the intersection of a drone with a robotic car, so that your plane is also your car, but the big leap in technology is that you are actually driving 31) either other neither lesser truer .

Drones have a negative bias in the media, says Cummings, because they are 32) remotely sufficiently importantly essentially awkwardly seen as spy cameras. But most people don’t realise that when they are on a plane they are effectively travelling on a drone. The fly-by-wire technology that exists on all Airbus and many Boeing craft is the exact same technology that exists on drones.

The reason why drones are an answer for the future is that the truth is we are terrible drivers. Humans 33) inherently in-built inhouse inability indelibly have a half-second lag in almost any quick response that they need to have, for example a ball rolling out in a street. Even a half-second delay 34) should won't would will can mean the difference between life and death, and computers and automated systems don’t have that -they have microseconds.

So, our transportation network of the future, 35) both two as like such on the ground and in the air, will actually be 36) safety sure safer security secure when we turn it over to computers.

There really aren’t any technological 37) hurdles jumps laps springs plunges to this idea, says Cummings. The biggest problems we have are psychological and cultural, 38) on account at any rate as far as in terms of by the way giving up the car. But no new technology needs to be developed to have your own personal flying car. What we have to do is improve production and reduce manufacturing costs, and what that means is that we need more robots. So this is almost a self-circular process, where we need robots to build robots to make them 39) cleaner handier cosier happier cheaper .

So, when we look at globalising this concept of personal air vehicles, it means we will see the quality of life improve dramatically for everyone 40) around through direct out beyond the world.

Highest stone circle in southern England found on Dartmoor

The highest stone circle in southern England 41) has been found found has found founded was founded on a weather-battered slice of moorland in Devon.

Situated 525 metres (1,722ft) 42) beyond over up top above sea level, the ancient site is the first stone circle to be found on Dartmoor for more than a century.

The circle is the second largest on the moor and archaeologists believe it was probably part of a "sacred arc" of circles around the north-eastern edge.

Its discovery (43) multiplies adds subtracts divides calculates weight to the theory that there was some kind of planning and liaison between the communities living on Dartmoor in the late Neolithic/early Bronze Age 4,000 to 5,000 years ago.

Many stone circles were prodded and probed in Victorian 44) moments times era century period and before, so the opportunity to use modern scientific methods on a previously unexamined one is particularly exciting.

Archaelogists say the stone circle provides an exciting opportunity to 45) try use apply experiment fix modern scientific methods to a previously unexamined circle.

Jane Marchand, senior archaeologist at Dartmoor national park, said: "The discovery is providing an opportunity for investigation using the very latest archaeological scientific methods to provide long-awaited 46) visions views insights sights visuals into the chronology, construction and the purpose of these most elusive and iconic of Dartmoor’s prehistoric monuments."

With a diameter of 34 metres (112ft), the circle 47) rounds includes comprises consists builds of 30 recumbent stones, plus one more lying in a gap just outside the circle and now incorporated into an unfinished enclosure wall.

The stones are of a fairly uniform size, suggesting they were carefully chosen. Packing stones visible around the bases of some of these indicate that they were originally 48) uptight upright upstart upset upfront .

Marchand added: "Some preliminary radio carbon dating has already taken place on soil samples taken from directly 49) beams amidst beyond amongst beneath two of the stones. These are the first radiocarbon determinations from a Dartmoor stone circle. The dates have produced very similar results and calibrate to the end of the third millennium BC (4,000 years ago). This indicates the date 50) to of down up by which the stones had fallen."

Airbnb grows to a million rooms, and hotel rivals are quiet, for now

By any measure, Airbnb’s growth has been 51) glistening twitching twinkling sparkling stunning since the company was founded in 2008. It now has more than a million rooms available in homes and apartments. 52) Despite Because Although In spite Within this growth, though, the big hotel chains, at least outwardly, have yet to take substantial action to counter the potential threat from the upstart lodging service.

One reason is the strength of the travel market. Spending on hotels this year is projected to be even higher than last year’s robust outlays,53) agreeing according saying telling speaking to Douglas Quinby, an analyst for Phocuswright. Other reasons include the ingrained habits of travelers, particularly older ones and business travelers on 54) cherished dear expensive total expense accounts, who see no reason to change their ways.

But there are signs that Airbnb is making 55) railroads high roads crossroads byroads inroads with business travelers, a critical group of customers to the hotel industry. Airbnb now reports that just under 10 percent of its guests are traveling on business.

Mike Oshins, a hospitality management professor at Boston University, said that travelers working for themselves or small companies were the most likely professionals to use Airbnb. Kisha Mays, chief executive of Just Fearless, a business development company serving female entrepreneurs, often travels outside the United States and prefers Airbnb to hotels. 56) Along Beside As well as Also As with the lower price, she appreciates being able to wash a few items of clothing or eat dinner without going out to a restaurant. "I want to feel like I am at home instead of in some 57) awkward clumsy bleak distracted dislocated hotel room," she said.

Hotel room price growth in New York has lagged behind historical levels during the economic upturn, according to research by Sean Hennessey of New York University’s Tisch Center for Hospitality and Tourism. 58) While When For During After some of that is because of the increase of hotel construction and number of available rooms, he said, hoteliers also cite the advent of a "shadow inventory" including Airbnb and others as a reason for the price stagnation.

They may not cite Airbnb as a direct competitor, but hotels are taking some actions as the service grows more popular. Hospitality industry representatives are asking for laws 59) would require will require required requiring have required Airbnb properties to adhere to the same safety standards that hotels do. Airbnb said it required hosts to follow their local laws and encourages all hosts to take some basic steps to keep their homes safe.

"I do believe people will sample the service," Mr. Hennessey said, "but converting masses of people permanently is a very 60) frail tough rugged cough rough task."

Looking for ways to keep memory sharp in aging brains

With people 61) places worlwide nationwide earthly worldly living longer, marketers are seizing on every opportunity to sell remedies and devices that they claim can enhance memory and other cognitive functions and perhaps stave off dementia as people age.

Among them are "all-natural" herbal supplements with ingredients that include the brain stimulant ginkgo biloba, and huperzine A, said to increase levels of the neuro transmitter acetylcholine; brain-training games on computers and smartphones; and all 62) type manner kind sort classes of puzzles, including crosswords, sudoku and jigsaw, that give the brain a workout, albeit a sedentary one.

Unfortunately, 63) lot lots of many much few such potions and gizmos have been proven to have a meaningful, sustainable benefit beyond 64) sewing lining knitting weaving waving the pockets of their sellers. Before you invest in them, you’d be wise to look for well-designed, placebo-controlled studies that attest to their ability to promote a youthful memory and other cognitive functions.

Even the widely acclaimed value of doing crossword puzzles has been 65) cried shouted called howled hollered into question, beyond its unmistakable benefit to one’s font of miscellaneous knowledge.

There is also research-based evidence that certain computer games can improve cognitive skills in older people. Dr. Adam Gazzaley, a neuroscientist at the University of California, demonstrated that a computer game called NeuroRacer enhanced the ability to multitask, a facility that typically declines with age. NeuroRacer requires players to 66) storm steer stare steal stealth a car on a winding, hilly road with the left thumb while watching for signs that randomly pop up and have to be shot down with a right-hand finger.

Nonetheless, Dr. Gazzaley cautioned against assuming that video games are "a guaranteed panacea" for cognitive decline. 67) Even Although Whenever Often Seldom it is commonly thought that older adults do not enjoy learning to use new technology, the researchers noted that the older adults who completed the computerized training programs "were positive" about the experience.

They pointed out that with a growing number of older adults having computers and access to the Internet, "cognitive training programs need to take fuller advantage of these outlets to improve cognitive function and delay cognitive decline in 68) later older senior pension retirement life." However, the team also called for more and larger "well-designed randomized controlled trials" to confirm their findings.

In addition 69) moving to moving engaged engaging to engaging in daily physical exercise, consuming a heart-healthy diet and trying to get seven hours of sleep a night, other memory enhancing strategies include addressing people by name every time one sees them and dialing frequently called phone numbers from memory rather than using 70) type tap touch speed hand dial.

Should doctors be allowed to nap on the job?

Are medical students overworked? It’s a question that’s asked in many countries, and in Latin America the debate has been fuelled by photos of a young resident taking a 71) blaze snooze booze shout whip .

It’s late, you’re exhausted from working all hours at a stressful job, and nobody’s around - so you try to 72) grab handle hand on wrestle wring a few minutes sleep. It’s what happened to a young medical resident in Monterrey, Mexico - only she didn’t count on a patient 73) spying spotting peering staring glancing her and taking a picture which was then posted online, prompting a huge debate.

It’s standard practice for junior doctors in Mexico and most countries in the region to work 74) time tables slides scales shifts of up to 36 hours in their final years of training. But the blogger also noted that 75) while once during for as a doctor is qualified, they enjoy a good quality of life and a decent salary - well beyond the standard of most of the patients they treat.

But the doctors didn’t take the criticism 76) standing up lying dow winding up sitting standing . When Juan Carlos, a Mexican doctor, heard the story, he created the hashtag #YoTambienMeDormi ("I’ve also fallen asleep"). Carlos told BBC Trending that he wanted to "expose the differences between the rights of doctors and the rights of patients."

"As a doctor here in Mexico, it’s illegal to take a picture of a patient without their prior consent, even if it’s for medical purposes. But a patient can take a photo of a doctor with the 77) one signed signature sole whole purpose of damaging our reputation."

So far, 17,000 people have declared their support for medical students on Twitter 78) along as for as well along with stand-by several thousands more on Facebook, and the discussion has grown to include doctors and patients all over the region. Many have posted pictures of themselves or colleagues sleeping on the job to highlight how tiring their work is.

The Latin American doctors argue, however, that they’re not being treated as humans with "normal physiological needs", says another Mexican doctor, Marcela Cueva, "And that doesn’t mean that we don’t 79) take after bring up take care care for see beyond of our patients. The problem is that nowadays the doctor-patient relationship has been damaged and social media is part of the reason. People are 80) likelihood just likely more likely too likely as likely to write when they go through bad experiences rather than good ones."