In-depth 2012: The best long reads of the year

Read more: "2013 Smart Guide: 10 ideas that will shape the year"

Dig deeper, look closer and think harder – these are the goals of New Scientist's in-depth articles. Each one is perfect for saving in your favourite read-it-later app and curling up in front of a glowing tablet for a good long read.

These are our editors' picks of our best features of the year, and all are prime examples of the amazing breadth of big ideas that were ripe for the tackling in 2012. When you have finished digesting these readable meals, visit our in-depth articles archive if you're hungry for more.

Richard Webb: "You might not have heard of the algorithm that runs the world." I certainly hadn't, or that its mathematical foundations are starting to look a little wobbly. An eye-opening examination of how seemingly abstruse mathematics is in fact deeply embedded in modern life: "The algorithm that runs the world"

Sally Adee: Gastric bypass surgery is the best surgery you're not getting, said Dr Oz on his popular medical advice show in the US. Because of enthusiasm from people like him, this operation has become massively popular – but by whimsically hacking at our stomach, might we might be messing with a system far more complicated than anyone really understands? Samantha Murphy had the surgery and began to realise that losing 45 kilograms could come with some profound neurological trade-offs: "Change your stomach, change your brain"

Michael Le Page: Nowadays most people either haven't heard of the 1970 book The Limits to Growth, or believe – wrongly – that the research it was based on has been discredited. But the main message of Limits is perhaps more relevant than ever – that a delayed response to mounting environmental problems leads to catastrophe further down the line: "Boom and doom: Revisiting prophecies of collapse"

Richard Fisher: This is a simple story about a scientific mystery. Strange rumbles, whistles and blasts have been reported all over the world for centuries. In New York state, they are called "Seneca guns"; in the Italian Apennines they are described as brontidi, which means thunder-like; in Japan they are yan; and along the coast of Belgium they are called mistpouffers – or fog belches. Yet the cause is often unexplained – what on Earth could be behind them? "Mystery booms: The source of a worldwide sonic enigma"

Valerie Jamieson: It's been a sensational year for particle physics, but the Higgs boson isn't the only fascinating particle in town. Meet 11 more particles that change our understanding of the subatomic world: "11 particles for 11 physics puzzles"

David Robson: What is the secret of the legendary "flow state" that seems to mark out genius in everyone from piano virtuosos to tennis champions? With the latest brain stimulation techniques, it may soon be within everyone's reach, and Sally Adee writes with panache as she describes her own use of the technology during a terrifying marksmanship training session. This has everything I want to read in a story – drama, a revolutionary idea and some practical advice for anyone to try at home: "Zap your brain into the zone: Fast track to pure focus"

Graham Lawton: The writer of this article, Christopher Kemp, is a self-confessed lover of marginalia – nooks and crannies of science that are often overlooked. But as this beautifully written story reveals, those nooks and crannies often contain rich and fascinating material. Material, in fact, like ambergris: "Heaven scent: The grey gold from a sperm whale's gut"

Ben Crystall: Many people may remember the wonder material Starlite from an episode of BBC TV's Tomorrow's World – it seemed to have a miraculous ability to withstand fire and heat. So what happened to it? In this feature Richard Fisher uncovers the strange tale of Starlite and its eccentric inventor Maurice Ward, and on the way reveals fascinating details about Ward and his creation. And though Ward is dead, the story may not be over – it now looks like Starlite could get a second chance… "The power of cool: Whatever became of Starlite?"

Clare Wilson: I enjoyed working on this feature the most this year because to me it truly represents the future of medicine. New Scientist often predicts that some new medicine or technology will be available in five years' time. When it comes to using gene therapies or stem cell therapies on babies in the womb – the subject of this feature – the timeline is probably more uncertain, yet I don't see how anyone can doubt that some day it will happen: "Fetal healing: Curing congenital diseases in the womb"

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

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Surge in demand for pet hotel service during year-end holidays

SINGAPORE: Pet hotels are becoming a hit with owners who want to ensure that their furry friends are in good hands while they are away.

Some hotels said demand went up by about 30 per cent last year, compared with 2011 while occupancy rates are almost always full during the year-end holidays.

From massages to soothe aching joints to customised spa sessions that come with a clay pack wrap of nutrients and minerals, the pets are enjoying a break of their own at pet-wellness centres, such as pet hotel, Petopia, while their owners are away.

Petopia's marketing director Richard Wee said: "They find this place more like a playroom. We have one case of a customer's dog that after they left the hotel and came back for grooming one day, the dog ran all the way back to the playroom to just look for his friends to spend time with during the hotel stay."

Petopia can take in up to 50 animals and rooms are usually booked a few months in advance.

Pet owners fork out between S$75 and S$158 for a night's stay.

"We are looking at three different crowds. The year-end holiday goers, they clear their annual leave. We have families who bring the children overseas during school holidays and a large number of expatriates who return home for the year-end season," said Mr Wee.

Safety and security are the top concerns of owners, along with separation pangs.

Mr Wee said: "We have customers who choose not to go away for many years because they are afraid of not having someone to look after their pets well."

To allay such concerns, the hotel installed webcams in the building for owners to track their pets' movements.

Er Yanshan, a pet owner, said: "It's better than just leaving your pet at home with no one to look after it, so it's a good idea."

What's more alarming is when owners abandon their pets.

The Society for the Prevention of Cruelty to Animals (SPCA) said more than 100 animals were given up at the centre in December 2012 by owners who wanted to go away.

That is twice the number, compared with the other months of the same year.

Mr Lee Yao Huang, who is animal care officer at SPCA, said: "Some of them might decide to give it to SPCA, or they just abandoned it at their HDB area or grass patch near their place.

"We actually give them some help by advising them to put it on our re-homing notice on our SPCA website or they can put up brochures and notices on the vet's clinics or supermarkets on their notice boards."

And for those who don't want to fork out too much at the pet hotel, another way is to get friends or relatives to play pet-sitter.

- CNA/fa

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Senate passes fiscal cliff deal; House makes no promises

STORY HIGHLIGHTS

• The measure now goes to the House where a vote could come Tuesday


• A statement from House leadership made no promises


• Under the Senate package, taxes would stay the same for most Americans


• It leaves a range of big issues unaddressed.

As the fiscal cliff looms, what's your New Year's message to Washington? Go to CNN iReport to share your video.

(CNN) -- A full two hours after a midnight deadline, the Senate overwhelmingly passed a deal Tuesday to avert the feared fiscal cliff on an 89-8 vote.

The Senate package would put off budget cuts for two months and preserve Bush-era income tax cuts for individuals earning less than $400,000 or couples earning less than $450,000.

The measure now goes to the House where it faces an uncertain future in the Republican-controlled body.

"Glad it's over," said Senate Majority Leader Harry Reid, D-Nevada, after the vote. "We'll see if the Republicans in the House can become functional instead of dysfunctional."

A statement from House leadership made no promises.

"Decisions about whether the House will seek to accept or promptly amend the measure will not be made until House members -- and the American people -- have been able to review the legislation," the statement said.

A vote could come as early as New Year's Day. The House is scheduled to convene at noon.

Sen. John Hoeven, R-North Dakota, was hopeful the House will follow suit.

"The vote was 89 to 8. Bipartisan vote. 89 votes," he said. "I think it sends a strong message and I think it will be approved by the House."

What the package proposes

Read the bill (pdf)

Under the Senate package:

-- Taxes would stay the same for most Americans. But it will rise for individuals making more than $400,000 and couples making more than $450,000. For them, it will go from the current 35% to the Clinton-era rate of 39.6%.

-- Itemized deductions would be capped for those making $250,000 and for married couples making $300,000.

-- Taxes on inherited estates will go up to 40% from 35%.

-- Unemployment insurance would be extended for a year for 2 million people.

-- The alternative minimum tax -- a perennial issue -- would be permanently adjusted for inflation.

-- Child care, tuition and research and development tax credits would be renewed.

-- The "Doc Fix" -- reimbursements for doctors who take Medicare patients -- will continue, but it won't be paid for out of the Obama administration's signature health care law.

-- Prevents a spike in milk prices. Agriculture Secretary Tom Vilsack said milk prices would have doubled to $7 a gallon because a separate agriculture bill had expired.

What's not addressed

While the package provides some short-term certainty, it leaves a range of big issues unaddressed.

It doesn't mention the debt ceiling, and temporarily puts off for two months the so-called sequester -- a series of automatic cuts in federal spending that would have taken effect Wednesday. It would have reduced the budgets of most agencies and programs by 8% to 10%.

This means that, come late February, Congress will have to tackle both those thorny issues.

"We're going to have to deal with the sequester, that's true," said Sen. Max Baucus, D-Montana, "but look, this is better than nothing."

Reid said the agreement was a win for average Americans.

"I've said all along that our most important priority was to protect the middle class families," he said. "This legislation does that."

And maybe a bit more.

According to the U.S. Census Bureau, median household income in 2011 was $50,054, which is well below the tax cut threshold approved by the Senate.

Senate Minority Leader Mitch McConnell, R-Kentucky, praised the effort, but said it shouldn't have taken so long to get an agreement.

"We don't think taxes should be going up on anyone but we all knew that if we did nothing they would be going up on everyone today," he said. "We weren't going to let that happen."

All eyes on the House

As lawmakers left the chamber around 2 a.m., there was no sentiment of celebration, more a sense of relief that the vote was done.

One of the last members to leave was 88-year-old retiring Hawaii Senator Daniel Akaka. He walked down the steps bent over his cane, assisted by an aide, but smiling.

Others rubbed their eyes from lack of sleep. It was the end to a very long, down-to-the wire day -- and all eyes now turn to the House.

There's a lot at stake.

If the House doesn't act and the Bush administration's 2001 and 2003 tax cuts expire, broad tax increases will kick in as will $110 billion in automatic cuts to domestic and military spending.

The nonpartisan Congressional Budget Office has predicted the combined effect could dampen economic growth by 0.5%, possibly tipping the U.S. economy back into a recession and driving unemployment from its current 7.7% back over 9%.

President Barack Obama urged House members to pass the package "without delay."

GOP sources said House members saw little practical difference in settling the issue Monday night versus Tuesday.

But if tax-averse House Republicans approve the bill on Tuesday -- when taxes have technically gone up -- they can argue they've voted for a tax cut to bring rates back down, even after just a few hours, GOP sources said. That could bring some more Republicans on board, one source said.

Read more: Why your paycheck is getting smaller, no matter what

Concerns persist

Read more: What if there's no deal on fiscal cliff

The White House budget office noted in September that sequestration was designed during the 2011 standoff over raising the federal debt ceiling as "a mechanism to force Congress to act on further deficit reduction" -- a kind of doomsday device that was never meant to be triggered. But Congress failed to substitute other cuts by the end of 2012, forcing the government to wield what the budget office called "a blunt and indiscriminate instrument."

In its place, the Senate plan would use $12 billion in new tax revenue to replace half the expected deficit reduction from the sequester and leave another $12 billion in spending cuts, split half-and-half between defense and domestic programs.

Despite the progress, the White House cautioned that deficit reduction still requires more work.

"But tonight's agreement ensures that, going forward, we will continue to reduce the deficit through a combination of new spending cuts and new revenues from the wealthiest Americans," Obama said.

Read more: Medicare patients may suffer if country goes over fiscal cliff

Conservative lobbyist Grover Norquist, whose Americans for Tax Reform pushes candidates to sign a pledge never to raise taxes, said the plan "right now, as explained" would preserve most of the Bush tax cuts and wouldn't violate his group's pledge.

"Take the 84% of your winnings off the table," Norquist told CNN. "We spent 12 years getting the Democrats to cede those tax cuts to the American people. Take them off the table. Then we go back and argue about making the tax cuts permanent for everyone."

But Robert Reich, who served as labor secretary in the Clinton administration, said the $450,000 threshold "means the lion's share of the burden of deficit reduction falls on the middle class, either in terms of higher taxes down the road or fewer government services." In addition, he said, the plan does nothing to raise the federal debt ceiling just as the federal government bumps up against its borrowing limit.

And that, Arizona GOP Sen. John McCain told CNN, is likely to be "a whole new field of battle."

"We just added 2.1 trillion in the last increase in the debt ceiling, and spending continues to go up," McCain said. "I think there's going to be a pretty big showdown the next time around when we go to the debt limit."

CNN's Matt Smith, Mike Pearson, Jessica Yellin, Dana Bash, Deirdre Walsh, Lisa Desjardins, Ted Barrett and Ashley Killough contributed to this report.

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Conn. gunman Adam Lanza's remains claimed: report

HARTFORD, Conn. The body of the man who killed 26 people at a Connecticut elementary school has been claimed for burial.

Connecticut Medical Examiner Wayne H. Carver II tells the Hartford Courant Adam Lanza's remains were claimed several days ago by someone who wanted to remain anonymous.

Lanza's burial site also is being kept secret, the newspaper reports.

A spokeswoman at Carver's office told The Associated Press she could not release details about the status of Lanza's remains.

The 20-year-old Lanza killed 20 first-graders and six educators at the Sandy Hook Elementary School on Dec. 14. He also killed his mother in their Newtown home before going on the rampage and then committing suicide.

A private funeral was held earlier this month in New Hampshire for his mother, Nancy Lanza.

17 Photos

Newtown, Conn., memorial vigil

Police have not offered a motive for the killings.

Carver has asked geneticists from the University of Connecticut to study Lanza's DNA for any mutations or other abnormalities that could shed light on his motivation for the shootings, the Courant says.

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Deal or No Deal, 'Cliff' Debate Will Linger Into 2013

Dec 31, 2012 6:00am

AP Photo/ Evan Vucci

Analysis

The fiscal cliff is just the beginning.

Regardless of whether Democrats and Republicans reach some kind of last-minute bargain to avoid the worst effects of tax hikes and spending cuts, the disaster that has been the fiscal cliff negotiations has broad implications for the Washington agenda in 2013 and beyond.

The tone has been set for the new year, and possibly for the rest of President Obama’s time in office: Washington’s divisions are the only point that matters anymore. Call if dysfunction or call it just plain broken, just don’t call it capable of even small legislative moves that involve compromise.

Hopes of a grand bargain on fiscal policy, involving entitlement spending, tax rates, and the debt ceiling, disappeared weeks ago. All that’s left are fading possibilities involving the delaying portions of tax increases and restoring some planned cuts.

Those are moves that actually make the deficit outlook worse. More saliently, they should be the politically easy things to get done, yet Congress is paralyzed and the president appears powerless to do anything meaningful to prod action.

The other items Obama ticked through this weekend as part of his second-term agenda – immigration reform, energy and environmental policy, infrastructure investments, gun control – look like dreams in this environment.

The causes are manifold, and the blame doesn’t have to be equally distributed for the ramifications to be real. The fact is that Republicans – who will control at least one house of Congress for at least half of the president’s second term – do not now and may not ever see sufficient political benefit to offer the types of concessions Democrats are insisting on.

If an election couldn’t change that, there’s precious little left that can. Name the issue and it’s all too easy to see similar dynamics derailing meaningful reform.

Washington is now broken beyond the point where bold individual leadership can even fix it. The forces at play are bigger than the ability of the president, House Speaker John Boehner, or any other person or persons to turn them around without the certain promise of a revolt in the party ranks that would leave them out of effective power.

The cliff metaphor suggests a jump into a void, but at least one that has a bottom. Yet as the nation watches this slow-motion wreck, the depths of dysfunction have yet to be fully explored.

SHOWS: World News

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2012 review: The year in the physical sciences

Read more: "2013 Smart Guide: 10 ideas that will shape the year"

You may have thought that 2011 was the year of amazing physics, but 2012 soundly beats it. Whereas last year threw up intriguing questions, 2012 was a year of answers, some enabled by marvels of engineering. A boson resembling the Higgs popped up at the largest particle accelerator ever built, confirming hints first glimpsed at the end of 2011. Statistics were crucial to that discovery and proved vital even in the US presidential elections. But 2012 brought lessons as well as triumphs: what looked in 2011 like neutrinos breaking the cosmic speed limit was revealed to be an engineering flaw. Now, relive the roller coaster.

Beyond Higgs: Deviant decays hint at exotic physics
The world's most wanted particle has shown up at last, and surprises in its behaviour could help transcend the limits of the standard model of particle physics

Neutrino speed errors dash exotic physics dreams
Extra dimensions, time travel and tachyons all seemed a little more likely in the wake of claims that subatomic particles called neutrinos had moved faster than light – but the universe just returned to its slightly more mundane self

If you want to be president, hire geeks not pundits
As the US re-elected President Barack Obama, mathematics fans crowned their own king: statistician Nate Silver. Elections of the future could be won by the party with the best stats

Why physicists can't avoid a creation event
The big bang may not have been the beginning of everything – but new calculations suggest we still need a cosmic starter gun

Fiendish 'ABC proof' heralds new mathematical universe
Solving this 25-year-old puzzle meant tearing up and rebuilding the basic elements of number theory – and the result could prise open other enigmas

Death-defying time crystal could outlast the universe
Don't take the heat death of the universe lying down – a time crystal, symmetrical in time rather than space, would have the power to survive even the end of the universe

Truth of the matter: The Majorana particle mystery
Can a single entity be matter and antimatter at the same time? The idea was first aired 80 years ago, but now matter-antimatter hybrids seem to have been sighted trapped in the innards of a solid superconductor

Quantum measurements leave Schrödinger's cat alive
Physicists have probed a delicate quantum state without destroying it – the equivalent of taking a peek at the metaphorical cat without killing it

US judge rules that you can't copyright pi
The mathematical constant pi continues to infinity, but an extraordinary lawsuit that centred on this most beloved string of digits has come to an end – on Pi Day

Move over graphene, silicene is the new star material
After only a few years basking in the limelight, wonder material graphene now has a silicon-based competitor that could be more compatible with electronic devices

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

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Taiwan upgrades dozens of fighter jets

TAIPEI: Taiwan plans to complete the first stage of an ambitious plan to upgrade its fighter jet force by the end of 2013, in an effort to maintain a credible deterrent against China into the 2030s.

Some 60 of Taiwan's Indigenous Defence Fighters (IDFs) will be upgraded and ready for deployment within 12 months, according to a report submitted to parliament by the defence ministry.

The aircraft will be equipped with enhanced radar, avionics and electronic warfare capabilities, along with a locally-produced cluster bomb, according to the report.

The remainder of the country's 127-strong fleet of IDFs will be upgraded by 2017, the report said.

Taiwan deployed the IDFs in 1992 and the upgrade, which kicked off in 2009, will extend the service life of the aircraft for about another two decades according to the report, which was submitted to parliament last week and made available to AFP by a legislator on Monday.

The United States last year agreed to equip Taiwan's 146 ageing US-made F-16 A/B jets with new technologies in a US$5.85 billion deal that irked China.

China has repeatedly threatened to invade Taiwan should the island declare formal independence, prompting Taipei to develop more advanced weapons or seek to buy them from abroad.

- AFP/xq

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Secretary of State Clinton hospitalized with blood clot

From Elise Labott, CNN

updated 7:38 AM EST, Mon December 31, 2012

STORY HIGHLIGHTS

• The clot was discovered in a follow-up exam related to her concussion


• Clinton is expected to remain hospitalized for at least the next 48 hours


• She was scheduled to return to work this week after recovering from the concussion

(CNN) -- Secretary of State Hillary Clinton was hospitalized Sunday after doctors discovered a blood clot during a follow-up exam related to a concussion she suffered this month, her spokesman said.

She is expected to remain at New York Presbyterian Hospital for the next 48 hours so doctors can monitor her condition and treat her with anti-coagulants, said Philippe Reines, deputy assistant secretary of state.

"Her doctors will continue to assess her condition, including other issues associated with her concussion," Reines said. "They will determine if any further action is required."

Reines did not specify where the clot was discovered.

Hillary Clinton through the years

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Clinton, 65, was suffering from a stomach virus earlier this month when she fainted due to dehydration, causing the concussion.

Clinton spent the holidays with her family last week after working from home.

She was scheduled to return to work at the State Department this week after being sidelined for the past three weeks. Her illness forced her to bow out of testifying December 20 before the House Foreign Affairs Committee on the deadly attack on the U.S. Consulate in Benghazi, Libya. Deputies Thomas Nides and Bill Burns appeared in her place.

The medical setback comes as Clinton is wrapping up her busy tenure as secretary of state, during which she has logged more than 400 travel days and nearly a million miles. She plans to step down from the post if and when Sen. John Kerry -- President Barack Obama's choice to replace her -- is confirmed by the Senate.

Read more: Hillary Clinton fast facts

CNN White House Correspondent Jessica Yellin contributed to this report.

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Storm dumps up to foot of snow in N.E.

BOSTON Weather watchers say up to a foot of snow fell in parts of southern New England as the latest winter storm moved through the Northeast.

The storm had ended in the region by Sunday morning and dry weather was expected for days, although strong winds may chill the bone.

Meteorologist Frank Nocera of the National Weather Service in Taunton, Mass., said six to 12 inches of snow fell from Saturday afternoon and overnight in Rhode Island, eastern Connecticut and eastern Massachusetts, including Foxborough where the New England Patriots play.

The exception was at Boston and the Cape Cod area where rain was mixed in with snow. There two to four inches fell.

Many residents lost power after wet snow piled up on power lines.

In New York, the Albany County Airport Authority said passengers were stranded when their plane skidded into a snow bank at the upstate New York airport and became stuck. No one was injured in yesterday's accident; the 66 passengers and four crew members aboard the GoJet Airlines flight, operating as United Express, were sent back to the airport by bus.

Flights at Philadelphia's airport, mostly arrivals, were delayed about an hour, spokeswoman Stacy Jackson said.

In New Hampton, N.H., about 20 vehicles piled up in a storm-related chain-reaction crash on Interstate 93, police said, and five people were injured.

Parts of southern Indiana saw 6 to 8 inches of snow from the storm, some in areas that had received more than a foot from a blizzard earlier in the week. That blizzard was part of a storm system that dumped more than a foot of snow in some places and has been blamed for at least 16 deaths. It also spawned more than a dozen tornadoes in Alabama, the National Weather Service said.

But Saturday's snow wasn't as heavy as that of the previous storm, the weather service said.

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NYC Subway Pusher Held For Murder, Hate Crime

A woman who allegedly told New York City police she pushed a man onto the subway tracks because she hated Hindus and Muslims has been charged with murder as a hate crime.

Erica Menendez, 31, allegedly told police that she "pushed a Muslim off the train tracks because I hate Hindus and Muslims ever since 2001 when they put down the twin towers I've been beating them up."

Menendez was taken into custody this morning after a two-day search, and when detectives were interviewing her she allegedly made the statements implicating herself in Thursday night's subway-platform death.

"The defendant is accused of committing what is every subway commuter's worst nightmare -- being suddenly and senselessly pushed into the path of an oncoming train," Queen District Attorney Richard A. Brown said. "The victim was allegedly shoved from behind and had no chance to defend himself. Beyond that, the hateful remarks allegedly made by the defendant and which precipitated the defendant's actions can never be tolerated by a civilized society."

Menendez was due to be arraigned this evening. She could face 25 years to life in prison if convicted of the second degree murder charge.

On Thursday night, a woman shoved a man from a subway platform at Queens Boulevard, and the man was crushed beneath an oncoming train. Police had searched the area for her after the incident.

New York City Subway Pusher Charged With Murder Watch Video

The victim was Sunando Sen, identified by several media outlets as a graphic designer and Indian immigrant who opened a print shop, Amsterdam Copy, on Manhattan's Upper West Side. Sen was struck by the No. 7 train after the unidentified woman allegedly pushed him from the northbound platform at 40th Street and Queens Boulevard at 8:04 p.m. on Thursday.

Witnesses told police they had seen the woman mubling to herself, pacing along the platform. She gave Sen little time to react, witnesses said.

"Witnesses said she was walking back and forth on the platform, talking to herself, before taking a seat alone on a wooden bench near the north end of the platform. When the train pulled into the station, the suspect rose from the bench and pushed the man, who was standing with his back to her, onto the tracks into the path of the train," NYPD Deputy Commissioner Paul J. Browne said earlier today. "The victim appeared not to notice her, according to witnesses."

READ: What to Do If You Fall on the Subway Tracks

Police released brief surveillance video of the woman fleeing the subway station, and described the suspect as a woman in her 20s, "heavy set, approximately 5'5" with brown or blond hair."

It was New York's second death of this kind in less than a month. On Dec. 3, 58-year-old Ki-Suck Han of Queens was shoved onto the tracks at New York's Times Square subway station. Two days later, police took 30-year-old Naeem Davis into custody.

On Friday, New York City Mayor Michael Bloomberg was asked whether the attack might be related to the increase of mentally ill people on the streets following closures of institutions over the past four decades.

"The courts or the law have changed and said, no, you can't do that unless they're a danger to society. Our laws protect you," Bloomberg said on his weekly radio show.

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