Weaver ants help flowers get the best pollinator

MOST flowers don't want pesky ants hanging around scaring away would-be pollinators. Not so the Singapore rhododendron - the first flower found to recruit ants to chase poor pollinators away.

Francisco Gonzálvez at EEZA, the arid zone experimental station in Almeria, Spain, and colleagues studied flowers frequented by large carpenter bees (Xylocopa) and a much smaller solitary bee, Nomia. The larger bees seemed to be better pollinators - setting far more fruit than the smaller bees.

The team found that Nomia avoided plants with weaver ant patrols, and when they did dare to land, were chased away or ambushed by the ants. Being so much bigger, carpenter bees weren't troubled by the ants (Journal of Ecology, DOI:10.1111/1365-2745.12006).

Plants usually produce chemical repellents to scare off insects that prey on their pollinators. But lab tests suggested Gonzálvez's flowers were actively attracting weaver ants, although how remains a mystery. The team thinks carpenter bees choose flowers with ants so they don't have to compete with Nomia.

Michael Kaspari of the University of Oklahoma in Norman says this is a new kind of plant-ant interaction, and that the team makes a "strong case" for the rhododendron manipulating the behaviour of weaver ants to ward off inefficient pollinators.

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.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

If you are having a technical problem posting a comment, please contact technical support.

Read More..

29 bus drivers who will be repatriated will be paid: SMRT

SINGAPORE: Public transport operator SMRT said the 29 drivers who will be repatriated will be paid, before they leave the country. They will be given all salaries, all claims if any, and ex gratia bonuses on a pro-rated basis.

In its statement on Saturday evening, SMRT said there are valuable lessons learnt from this incident which are being addressed by the management.

SMRT said it needs to improve its management, communication and engagement efforts to be more proactive, responsible and sensitive to the needs of its drivers.

SMRT said: "We are determined to come out stronger from this episode. We want to thank all our drivers for continuing to work hard on the roads to serve our passengers, and we value their service to the company. We will continue to actively engage all drivers at all levels to address their concerns holistically, and work together to make the workplace a more conducive one for everybody."

- CNA/ck

Read More..

Watch the X-47B make its first catapult take-off

The X-47B gets ready for take-off in its first-ever catapult launch.

(Credit:
U.S. Navy photo)

OK, so it was on dry land, not on an aircraft carrier. But first steps are first steps.

On Thursday, the U.S. Navy carried out its first-ever steam catapult launch of the X-47B Unmanned Combat Air System -- see the video embedded below -- and was apparently quite happy with the way things turned out. Before the UCAS demonstrator can make an actual take-off from a carrier, it needs to show that it can handle the unique rigors of being flung slingshot-style into the air instead of making a more leisurely jaunt down a runway.

"This test, in addition to the extensive modeling and simulation done prior to today, gives us great confidence in the X-47B's ability to operate on the flight deck," said Capt. Jaime Engdahl, the Navy UCAS program manager.

The Navy, you see, is used to having test pilots make these sorts of sorties, to help figure out the quirks of new aircraft and avoid potentially nasty showstoppers. The X-47B will largely fly itself, drawing on a number of preprogrammed operations, and the after-action reports on test flights depend on data points, not debriefings.

Drones have become commonplace in military operations over the last half-decade or so, but to this point their use with aircraft carriers has been, well, uncharted waters. Space is tight, the flight deck moves, and operations are highly choreographed, and that'll be a new experience for pilotless planes and their handlers.

The catapult test took place at Naval Air Station Patuxent River in Maryland, where the Navy and X-47B builder Northrop Grumman also have been trying out the handheld controller that the flight deck operator will use aboard the carrier.

In the test flight after the launch, the experimental aircraft carried out maneuvers over Chesapeake Bay as it might when operating off a carrier, including flying in a typical ship holding pattern and executing a carrier approach flight profile, according to Northrop Grumman.

The jet-powered X-47B has a wingspan of 62 feet -- about 17 feet wider than that of the Navy's F/A-18 Super Hornet -- and a top speed in the "high subsonic" range. The aircraft made its maiden flight in February 2011 at Edwards Air Force Base in California. The Navy has two of the prototypes at the Pax River base.

Sea trials for the X-47B will begin soon aboard the USS Harry S. Truman, following additional ground-based catapult tests and final flight software validation. The real test -- carrier-based launches and recoveries -- will take place in 2013.

Read More..

Photos: Kilauea Lava Reaches the Sea

• 
  
  
  
  
  
  
  

  Into the Sea

  Photograph by Hugh Gentry, Reuters

  A spectacular natural phenomenon was on display early this week as lava from a vent in Hawaii's Kilauea volcano flowed into the ocean, sending up plumes of steam as it made contact with the waves.

  Though lava can still be viewed from Kalapana near the Big Island's Hawai'i Volcanoes National Park, ocean entry is no longer occurring, according to the National Park Service.

  Published November 30, 2012

  
  











• 
  
  
  
  
  
  
  

  Sea of Fire

  
  Photograph by Hugh Gentry, Reuters
  

  The lava traveled 7 miles (11 kilometers) from Kilauea’s Pu'u O'o vent to the ocean. When lava reaches the water, it cools and hardens, forming a lava delta that can be dangerous to nearby onlookers, according to Reuters.

  The news service reported that no communities on the Big Island were threatened by the lava flow.

  Published November 30, 2012

  
  











• 
  
  
  
  
  
  
  

  Volcanic Flare

  
  Photograph by Hugh Gentry, Reuters
  

  A burst of volcanic activity erupts from Kilauea’s crater in Hawai’i Volcanoes National Park on November 27.

  The volcano has been erupting continuously for nearly 30 years. No major damage has been suffered by a town since 1986, according to Reuters.

  Published November 30, 2012

  
  











• 
  
  
  
  
  
  
  

  Fiery Encounter

  Photograph by Hugh Gentry, Reuters

  “Ocean entries are beautiful but dangerous,” said Janet Babb, spokeswoman for the U.S. Geological Survey's Hawaiian Volcano Observatory, in a statement reported by Reuters. She warned that the steam could be more hazardous than it appears.

  Published November 30, 2012

  
  











• 
  
  
  
  
  
  
  

  Point of Contact

  
  Photograph by Matt Northam, My Shot
  

  A plume of smoke billows where lava from Kilauea meets the sea in this aerial photo taken November 27.

  Published November 30, 2012

  
  











• 
  
  
  
  
  
  
  

  Photograph by Peter Vancoillie, Your Shot

  Published November 30, 2012

  
  

');

---

 $'+ doc.ngstore_price_t +'';
html += ' $'+ doc.ngstore_saleprice_t +'';
} else {
html += ' $'+ doc.ngstore_price_t +'';
}
html += '

';

$("#ecom_43331 ul.ecommerce_all_img").append(html);




o.totItems++;

}// end for loop
} // end if data.response.numFound != 0

if(o.totItems != o.maxItems){
if(o.defaultItems.length > 0){
o.getItemByID(o.defaultItems.shift());
} else if(o.isSearchPage && !o.searchComplete){
o.doSearchPage();
} else if(!o.searchComplete) {
o.byID = false;
o.doSearch();
}
}// end if
}// end parseResults function

o.trim = function(str) {
return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
}

o.doSearchPage = function(){
o.byID = false;

var tempSearch = window.location.search;
var searchTerms ="default";
var temp;

if( tempSearch.substr(0,7) == "?search"){
temp = tempSearch.substr(7).split("&");
searchTerms = temp[0];
} else {
temp = tempSearch.split("&");
for(var j=0;j 0){
o.getItemByID(o.defaultItems.shift());
} else if(o.isSearchPage){
o.doSearchPage();
} else {
o.doSearch();
}

}// end init function

}// end ecommerce object

var store_43331 = new ecommerce_43331();





store_43331.init();

Read More..

Obama: Don't Hold Middle-Class Tax Cuts Hostage

Dec 1, 2012 6:00am

AP Photo/Charles Dharapak

President Obama is urging Congress to extend tax breaks for the middle class, saying it’s “unacceptable for some Republicans in Congress to hold middle class tax cuts hostage simply because they refuse to let tax rates go up on the wealthiest Americans.”

With the clock ticking toward the so-called “fiscal cliff,” Obama asked lawmakers in his weekly address to “begin by doing what we all agree on” and extend the middle class tax cuts set to expire at the end of the year.

Read: Cliff Dive: A Stalemate and a Scrooge Christmas

“With the issue behind us, we’ll have more time to work out a plan to bring down our deficits in a balanced way, including by asking the wealthiest Americans to pay a little more, so we can still invest in the things that make our nation strong,” he said from a toy manufacturing facility in Hatfield, Pa., where he delivered a similar message to workers Friday.

The president has launched a public campaign to try and force Republicans to sign on to his position on the expiring Bush tax cuts, asking them to pass a Senate bill that would maintain low middle class tax rates while allowing them to go up on the top income earners.

“If we can just get a few House Republicans on board, I’ll sign this bill as soon as Congress sends it my way,” he said.

Read: Could Outgoing Republicans Hold Keys to ‘Fiscal Cliff’?

Earlier this week, the White House put forth a deficit reduction proposal to avert the looming tax increases and spending cuts set to kick in on Jan. 1, which included $1.6 trillion in tax increases over the next 10 years, $50 billion in new stimulus spending, $400 billion in unspecified Medicare cuts, and a measure to effectively end Congress’s ability to vote on the debt limit.  The offer, which closely mirrors the president’s previous deficit-reduction plans, lacked concessions to Republicans, including detailed spending cuts, and was strongly rejected.

Since then, as House Speaker John Boehner put it, negotiations between the White House and House Republicans have come to a “stalemate.”

SHOWS: World News

Read More..

Friday Illusion: Mystery mirror reveals missing banana

Joanna Carver, reporter

There are no editing tricks involved and it's not CGI. In this video, filmed in one continuous shot, a banana vanishes before your eyes. Of course, the disappearance could be explained by some sleight of hand, but what's even more mysterious is the reflection that seems to linger behind.

The illusion was produced by psychologist Richard Wiseman, well-known for tricks that demonstrate the quirks of human perception. Magic can trick our brain into believing the impossible, even when it violates rules of the physical world. Previously, we showed you Wiseman's ball-in-glass trick, where he appears to reach through a glass to snatch a ball, and an illusion where his head seems to vanish.

So can you solve the mirror trick? Let us know in the Comments section below and the first person to post the correct answer will win a New Scientist goodie bag.

Read More..

WP says SMRT must address workers' grievances better

SINGAPORE: The Workers' Party said it is disappointed that it has taken a strike to bring to the forefront the bus drivers' grievances about their pay and living conditions.

In a statement issued on Friday evening, the party said the strike signals a failure in the labour dispute settlement process within SMRT.

It said while much attention this week has focused on the grievances of the bus drivers from China, SMRT must also address legitimate concerns that have been raised by all its bus drivers since the recent revision of salaries and work hours.

WP said its MPs will be asking questions about the four cases of drivers charged with instigating the illegal strike during the next sitting of Parliament.

- CNA/fa

Read More..

Name your own price for a THQ game bundle (PC)

Forget no-name indie games; the Humble THQ Bundle includes some top-rated mainstream titles.

(Credit:
Humble Bundle)

Got plans this weekend? Cancel 'em.

The Humble Bundle folks have put together what is arguably the best game bundle ever. It's called the Humble THQ Bundle, and it comes with six top-rated action/strategy games -- plus a seventh if you beat the average purchase price.

I'm going to start with that bonus game first, because it really kind of defines the whole bundle. It's Saints Row: The Third, which scored an 8.5 on GameSpot when it debuted just one year ago. Price if purchased from Steam: $39.99. Average bundle price (at this writing) you need to beat to get the game: $5.70.

So, yeah, if you pay at least $5.71, you'll get Saints Row: The Third, plus a seriously impressive roster of other titles:

As you can see from clicking through to their reviews, every single one of these games scored at least an 8.0, the exception being the 6.0-rated Tales of Valor expansion for Company of Heroes.

Even so, there's an embarrassment of gaming riches to be had in this bundle, and the Humble bundlers continue to do good works by letting you divvy up your payment among charities, the game developers, and themselves -- however you want to mix it up.

Most game bundles include indie titles that most folks have never heard of. There's nothing wrong with that -- lots of this indie games are gems -- but it's nice to see a bundle with some big names. If you're a gamer, this is too good to pass up. Check out the overview video below.

Bonus deal: Finally, USB 3.0 hard drives are getting cheap! For a limited time, and while supplies last, TigerDirect has the Western Digital Elements 1TB USB 3.0 hard drive for $49.99 shipped. That's after claiming a $30 mail-in rebate (PDF), which is available today only.

Deals found on The Cheapskate are subject to availability, expiration, and other terms determined by sellers.

Curious about what exactly The Cheapskate does and how it works? Read our FAQ.

Read More..

Pictures: Inside the World's Most Powerful Laser

Photograph courtesy Damien Jemison, LLNL

Looking like a portal to a science fiction movie, preamplifiers line a corridor at the U.S. Lawrence Livermore National Laboratory's National Ignition Facility (NIF).

Preamplifiers work by increasing the energy of laser beams—up to ten billion times—before these beams reach the facility's target chamber.

The project's lasers are tackling "one of physics' grand challenges"—igniting hydrogen fusion fuel in the laboratory, according to the NIF website. Nuclear fusion—the merging of the nuclei of two atoms of, say, hydrogen—can result in a tremendous amount of excess energy. Nuclear fission, by contrast, involves the splitting of atoms.

This July, California-based NIF made history by combining 192 laser beams into a record-breaking laser shot that packed over 500 trillion watts of peak power-a thousand times more power than the entire United States uses at any given instant.

"This was a quantum leap for laser technology around the world," NIF director Ed Moses said in September. But some critics of the $5 billion project wonder why the laser has yet to ignite a fusion chain reaction after three-and-a-half years in operation. Supporters counter that such groundbreaking science simply can't be rushed.

(Related: "Fusion Power a Step Closer After Giant Laser Blast.")

—Brian Handwerk

Published November 29, 2012

Read More..

2 Towns Hint at Powerball Winners

The $587 million question on the identity of the winners in the historic Powerball jackpot is still a mystery, but residents in Missouri and Maryland say they already know who the two lucky winners are.

Employees and customers at Marlboro Village Exxon in Upper Marlboro, Md., said a tall, black, bald man held the winning ticket purchased in Arizona, according to ABC News affiliate WJLA-TV.

Meanwhile, speculation began running wild in the small town of Dearborn, Mo., when a factory worker named Mark Hill updated his Facebook account late Thursday, writing, "We are truly blessed, we are lucky winners of the Powerball."

Within hours, his family began celebrating, telling ABC News Hill is one of the two big winners.

"Just shocked. I mean, I thought we were all going to have heart attacks," Hill's mother, Shirley, said Thursday.

Hill's mother says her son and his wife, Cindy, have three grown sons and an adopted daughter from China, but the family has been struggling financially.

Hill works in a hot dog and deli packaging factory, but it was unclear whether he showed up for work Thursday night.

"I'm very happy for him. He's worked hard in his life; well, not anymore," Hill's son Jason said. "Well, I hope we all stay very grounded, stay humble and don't forget who we are."

Powerball Winners: Was Arizona Winner Caught on Surveillance? Watch Video

Powerball Winners: Video Out of Possible Winners Watch Video

Missouri Lottery official Susan Goedde confirmed to ABC News Thursday that one of the winning tickets was purchased at a Trex Mart in Dearborn, about 30 miles north of Kansas City.

Lottery officials won't confirm whether Hill is the winner but family members offered another clue: Some of the winning numbers turned out to be the jersey numbers of some all-star Kansas City Royals baseball players, Hill's favorite team.

Hall of Fame third basemen George Brett wore 5; Willie Wilson 6; Bo Jackson 16.

The winning numbers were 5, 23, 16, 22 and 29; Powerball was 6.

Hill did not respond to ABC News' requests for comment.

In Maryland, surveillance cameras at the Upper Marlboro gas station captured the apparent winner walking into the store Thursday afternoon, digging into his chest pocket for his lottery tickets. After a few seconds of scanning the wad of tickets, the man began jumping up and down, pumping his arms.

The man gave the tickets to store manager Nagassi Ghebre, who says the six Powerball numbers was on the ticket, which the apparent winner said he bought in Arizona.

"And then he said, 'I got to get out of here,'" employee Freddie Lopez told WJLA.

But before leaving, the possible winner felt the need to check again to see whether he really had the ticket that millions of Americans dreamed of having.

"He says, 'Is this the right number? I don't know.' And I said, 'Yeah that's the numbers. You got them all,'" customer Paul Gaug told WJLA.

Employees and customers said the main stuck around for a few more seconds shouting, "I won," before leaving.

"He came back a minute later and said, 'I forgot to get my gas. What am I thinking?'" Lopez said.

The man drove out of the gas station in a black car and on a full tank of gas with a cash payout of $192.5 million coming his way.

"He said he lives in Maryland. I'm pretty sure," Gaug said.

The possible jackpot winner was wearing bright neon clothing and store employees told WJLA that he appeared to be a highway or construction worker.

Arizona lottery officials told WJLA that if the man does have the winning ticket, it needs to be redeemed within 180 days of the drawing in Arizona.

Read More..