A Wild Start for Weather in the New Year

Here we go again. The weather's going to extremes: a snowstorm in Jerusalem, wildfires in Australia, a cold snap in China, a heat wave in Brazil. Based on the first two weeks of the new year, 2013's picking up right where 2012 left off.

(What's up with the weather? Read the September 2012 National Geographic story and see a gallery of extreme weather pictures.)

As much as 8 inches (20 centimeters) of snow fell on Jerusalem (map) last Thursday, closing roads across the city. It was the biggest winter storm there in 20 years. Scores of trees fell from the weight of the snow, snowball fights broke out in the parks, and Israeli President Shimon Peres was photographed building a snowman outside his residence with help from his bodyguards.

In Australia, where a heat wave was smashing records across the country, the national weather agency added two new colors to its maps to handle the possibility of unprecedented temperatures: deep purple for above 122°F (50°C) and pink for above 125.5°F (52°C). The first eight days of the year were among the warmest on record, with January 7 ranking as Australia's hottest day ever, with an average temperature of 104.6°F (40°C). Some beaches were so hot swimmers couldn't walk to the water without burning their feet on the sand.

Elsewhere around the globe, the weather has been equally extreme. While much of the eastern U.S. and northern Europe basked in springlike weather, Tokyo (map) saw 3 inches (7.6 centimeters) of snow fall on the city this weekend, nearly half of its typical total for a full year.

In China, the average temperature fell to 25°F (-4°C) in early January, the lowest in nearly three decades. More than a thousand ships in China's Laizhou Bay (map) have been frozen into the ice.

At the same time, a heat wave and drought in northeast Brazil prompted officials to consider rationing electricity for the first time in a decade, and the temperature in Rio de Janeiro (map) reached a record 109.8°F (43°C).

The New Normal

Extremes like these are becoming the norm, a team of 240 U.S. scientists warned in a draft report released Friday. In an open letter to the American people, the authors of the latest National Climate Assessment said that the frequency and duration of extreme conditions are clear signs of a changing climate.

"Summers are longer and hotter, and periods of extreme heat last longer than any living American has experienced," they wrote. "Winters are generally shorter and warmer. Rain comes in heavier downpours, though in many regions there are longer dry spells in between."

The impacts of such changes are easy to see, they added. "Corn producers in Iowa, oyster growers in Washington State, and maple syrup producers in Vermont have observed changes in their local climate that are outside of their experience. So, too, have coastal planners from Florida to Maine, water managers in the arid Southwest and parts of the Southeast, and Native Americans on tribal lands across the nation."

Their report followed by a week the announcement by NOAA's National Climatic Data Center that 2012 ranked as the warmest year on record for the lower 48 states. Across the nation, more than 99 million people sweltered in temperatures above 100°F (38°C) for more than ten days. The average temperature last year was more than three degrees higher than the average for the 20th century.

On top of all the heat waves, the nation suffered 11 disasters with damages of at least $1 billion each, including the severe drought across the Midwest and superstorm Sandy along the East Coast. (See top reader photos of superstorm Sandy.)

Rough Waters Ahead

In another troubling sign of a changing climate, the amount of ice covering the Arctic Ocean shrank to its lowest level ever in late 2012. Nearly half of the ocean was free of ice in mid-September, the National Snow and Ice Data Center reported. Some scientists have speculated that the warming ocean is changing the pattern of the jet stream over the Arctic, increasing the likelihood of extreme weather for lower latitudes. (Related: "Polar Ice Sheets Shrinking Worldwide, Study Confirms.")

Even with all this weird weather, things could have been even worse if El Niño conditions had developed this winter, as many experts had predicted. During an El Niño phase, the pattern of storms across the Pacific typically increases the amount of warm, dry weather that reaches places like Australia, leading to severe drought or extended heat waves.

But last November, the anticipated El Niño fizzled out. If it hadn't, the Australian heat could have been even worse. "The fact that we have neutral El Niño conditions this year is helping to keep things less extreme than they might be otherwise," said meteorologist Jeff Masters of Weather Underground.

Looking ahead to the spring, Masters cautioned that the U.S. may be in for still more extreme weather. "The great drought of 2012 is now a two-year drought," he said, referring to the record-breaking dry spell that wiped out crops across the Midwest last summer. "If we come into spring with drought conditions as widespread and intense as they are now, we're at high risk of another summer of extreme drought, which could cost tens of billions of dollars—again." (Pictures: Surprising Effects of the U.S. Drought.)

Read More..

Arias Called Ex-Boyfriend 4 Times After Killing Him

Jodi Arias tried to cover her tracks after killing her ex-boyfriend, Travis Alexander, by making a flurry of phone calls to his cell phone and hacking into his voice mailbox, prosecutors alleged today.

Phone records presented in court today showed Arias persistently calling Alexander in the days before the killing. Ten calls were made from Arias' cell phone to Alexander's cell phone in the days leading up to his death, Verizon Wireless records expert Jody Citizen testified. Many of the calls were forwarded by Alexander straight to voice mail, Citizen said.

After Arias killed Alexander around 5:30 p.m. on June 4, 2008. , Arias called his phone four more times. The first call was made just hours after the killing at 11:37 p.m., the records showed. At least one of the calls was made as late as June 15, nearly a week after Alexander's body was found by friends.

At one point, Arias dialed into his voice mail system for 16 minutes, which indicated she was accessing his voice mail messages, Citizen said.

"If a person is in his phone for 16 minutes and they're not leaving a message what is going on?" prosecutor Juan Martinez asked.

Jodi Arias Murder Trial: Interrogation Tapes Played in Court Watch Video

"Somebody is listening to messages," Citizen answered.

See Full Coverage of Jodi Arias Trial

Watch the Jodi Arias Trial Live

See Jodi Arias Trial Videos

Arias' attorneys, who argue that she killed her ex-boyfriend out of self-defense, said that she could have been recording a message, and then listening to it and deleting it before recording again, accounting for the 16 minutes spent on the voice mail system.

"On Verizon, is it possible to change your voice mail, to erase it and do it over again?" defense attorney Kirk Nurmi asked Citizen. "Could someone have been doing that for a 16 minute phone call?"

"Yes," Citizen said.

Nurmi pointed out that phone records showed that two days before his death Alexander also called Arias, initiating two phone calls that lasted nearly 20 minutes and more than 40 minutes in the middle of the night.

The defense has said that Alexander was controlling and abusive toward Arias and was a "sexual deviant" whom she had to kill in self defense.

The prosecution, however, alleges that Arias was obsessed with Alexander, stalked him, and killed him out of jealousy after spending the afternoon having sex with him and taking naked photos of one another. She is accused of stabbing Alexander 27 times, slashing his throat, and shooting him in the head.

Arias could face the death penalty if convicted.

The jury returned to court today for the seventh day of testimony in the murder trial, after watching a series of graphic sexual photos of Arias and Alexander displayed on Monday, including the last photos of Alexander alive. The photos show both individuals lying naked on Alexander's bed, separately, and then Alexander naked in the shower.

The final photo shows a body part covered in blood around 5:30 p.m., which the prosecution alleges is when the attack on Alexander began and the camera fell to the floor.

Read More..

Today on New Scientist: 14 January 2013

Activist's death sparks open-access tribute on Twitter

Hundreds of researchers have been offering free access to their work in tribute to internet freedom activist Aaron Swartz, who committed suicide on Friday

Exploding microchip could make arms dumps safer

Shrapnel and bullets can set off huge explosions if they hit weapons stores. But microchip-based detonators could help keep them safe

The hologenome: A new view of evolution

Far from being passive hangers-on, symbiotic microbes may shape the evolution of the plants and animals that play host to them

White House uses Death Star request to plug science

The White House has politely declined to build a version of the planet-destroying space station from Star Wars but took the opportunity to promote science

Wolves bite back in the human world

Grey wolves are an evolutionary success story, giving rise to the domestic dog 10,000 years ago and now rebounding from centuries of persecution

Mariko Mori: From stone circles to stardust

The artist's new exhibition tethers human history to the life of the entire cosmos

Why we called off hunt for ancient Antarctic life

Geoscientist Martin Siegert says that drilling through 3 kilometres of ice to reveal the secrets of an entombed lake was never going to be easy

Give video games a sporting chance

Traditional fans will turn their noses up at e-sports, but they risk missing some compelling action

Benefits of emissions cuts kick in only next century

Even rapid action now to curb emissions will bring only modest results this century, but the earlier we act, the greater the eventual rewards

Video games take off as a spectator sport

Professional gaming has been huge in Asia for years, and improved technology means it is now going global

Read More..

Bernanke urges Congress to lift debt ceiling

WASHINGTON: US Federal Reserve Chairman Ben Bernanke on Monday urged Congress to raise the nation's borrowing limit as Democrats and Republicans battle over the federal budget.

"It's very, very important that Congress take the necessary action to raise the debt ceiling to avoid the situation where the government doesn't pay its bills," Bernanke said at a University of Michigan forum.

The United States ran up against its current borrowing limit of US$16.4 trillion at the end of 2012, but the Treasury says it is using "extraordinary measures" to extend the limit until late February.

"The right way to deal with this problem... is for Congress to do what it needs to do," Bernanke said.

"The way to address it is to have a sensible plan for spending and a sensible plan for revenue."

Earlier on Monday US President Barack Obama delivered a stern warning to rival Republicans against using the debt ceiling as leverage to get more spending cuts, saying the failure to raise it would sew financial chaos.

Congress's refusal to raise the debt limit beyond its current level of US$16.4 trillion could delay key government payments.

Obama warned that this could include Social Security checks and veterans benefits, paychecks to troops, air traffic controllers, and the honouring of contracts with small businesses.

- AFP/jc

Read More..

Computer prodigy Aaron Swartz remembered

Monday's CNET Update:

Computer prodigy Aaron Swartz remembered

Stories from today's tech news roundup:

- Internet activist Aaron Swartz, 26, committed suicide. He faced $4 million in fines and 50 years in prison for chargest hat he stole millions of academic papers from the Massachusetts Institute of Technology and from JSTOR. In the wake of his death, MIT is conducting an investigation of the school's role in the events before he took his life. Researchers have paid tribute to Swartz by posting links to copyright-protected papers on Twitter, to honor his campaign for open access to documents on the Internet.

- Samsung's Galaxy S smartphones have crossed the 100 million sales mark. The first model launched in May 2010.

- Apple is cutting back on screen orders for the iPhone 5, possibly due to weak demand, according to a report from The Wall Street Journal.

- Marketing agencies are seeing the iPhone slipping in popularity with teenager opinion surveys, according to Forbes.

- Audiobooks.com is ending its unlimited subscription plan of $25 a month. Instead, it's moving to a plan similar to Audible, where $15 a month gets you one audio book, and $23 offers two books for the month.

Watch CNET Update in the video above, or subscribe to the podcast via the links below.

Subscribe:

iTunes (HD) | iTunes (SD) | iTunes (HQ)

RSS (HD) | RSS (SD) | RSS (HQ)

Read More..

Poll: After Newtown, Most Back Some Gun Controls

Getty Images

A majority of Americans favor such gun control measures as banning assault weapons and expanding background checks on those who buy guns and ammunition, with support for banning high-capacity ammunition magazines at a new high in ABC News/Washington Post polls.

With Vice President Joe Biden set to present recommendations that were prompted by the Newtown, Conn., school shootings last month, this latest poll shows overwhelming support for certain moves: Eighty-eight percent favor background checks on firearms buyers at gun shows; 76 percent support checks on buyers of ammunition and 71 percent back a new federal database that would track all gun sales.

For full results, charts and tables, CLICK HERE

Sixty-five percent also support banning high-capacity ammunition magazines, a high in three ABC/Post polls to test the idea since early 2011, and up by 6 percentage points since just after the Newtown shootings. Among other suggestions, 58 percent favor banning the sale of so-called assault weapons, 55 percent support the National Rifle Association’s call for armed guards in schools and 51 percent would ban semi-automatic handguns.

Notably, support for the most popular of these measures – expanded background checks, a gun database and banning high-capacity magazines – includes a majority of people who live in gun-owning households, a group that accounts for 44 percent of all adults in this country.

The intensity of support for all these proposals is also notable; “strong” support for each measure outstrips strong opposition, in most cases by overwhelming margins (save the two less-popular items, armed school guards and a semi-automatic handgun ban). For instance, 50 percent “strongly” favor banning assault weapons, twice the number who strongly opposes it. And 76 percent strongly support background checks at gun shows, while only 8 percent say they’re are strongly opposed.

Fifty-five percent in this poll, produced for ABC by Langer Research Associates, express worry about a mass shooting in their own communities, and 52 percent say the Newtown shootings have made them more likely to support some forms of gun control.

As noted, support for banning high-capacity magazines is at a new high in polling since 2011. But there’s no consistent change on other proposals. Support for background checks on gun show buyers is essentially the same as it was in the late 1990s; support for banning assault weapons is numerically up from its low in 2009  but still well below its levels in the mid- to late 1990s; and support for banning semi-automatic handguns has been essentially steady in recent years.

ACTION – Looking ahead to the possibility of legislative action, most Americans give the issue at least a high priority for the president and Congress to address, but not “the highest,” and more give greater priority to  ”addressing gun violence” (68 percent) than specifically “enacting stricter gun control laws” (59 percent).

While they reach majorities, both of these are lower on the list than other top-shelf issues, including the economy, cutting federal spending, restructuring the tax system and slowing the rate of growth in spending on Social Security and Medicare.

The higher priority for “addressing gun violence” versus “enacting stricter gun control laws” (in a split-sample test) likely reflects some compunctions about whether gun control measures will work. The public, for instance, divides on whether stricter gun laws or armed guards in schools would be more effective (43-41 percent), and as many or more blame gun violence on inadequate treatment of the mentally ill, and on irresponsibility among gun owners, as on other causes.

FACTORS – Many factors receive broad blame for gun crimes. Leading the list, more than eight in 10 see inadequate treatment of the mentally ill, inadequate background checks and lack of individual responsibility by gun owners as contributors to gun violence, and more than half, in each case, say these contribute “a great deal” to the problem.

Sixty-nine to 73 percent also see the availability of semi-automatic handguns, high-capacity ammunition clips and assault weapons as contributors – yet as many say the same about the prevalence of violence in TV programs, movies and video games. The fewest numerically, 38 percent, believe violence in the media contributes “a great deal” to gun violence.

There are three items on which more people say the issue contributes to gun violence than favor legislative action: Sixty-nine percent see access to semi-automatic handguns as a contributor, versus 51 percent who favor banning such weapons; 73 percent say assault weapons are a contributor, versus 58 percent who favor banning those; and 70 percent see high-capacity magazines as a factor in gun violence, while slightly fewer, 65 percent, would ban them. The gaps apparently exist at least in part because support for action is lower among those who see these as contributing “somewhat” but not a great deal to gun violence – a group that includes more pro-gun individuals, such as people in gun-owning households, men and political conservatives.

GROUPS – There are striking differences among groups on some, but not all, gun control issues. Support for gun control measures generally is higher among women than men, with the gap peaking on a ban on semi-automatic handguns, supported by 60 percent of women versus 40 percent of men.

In addition to the expected partisan and ideological divisions, support for gun control also is higher in several cases among senior citizens vs. the youngest adults, among city dwellers vs. those in suburbs or rural areas, in Democratic-voting blue states vs. more-Republican red states, and in non-gun households vs. those in which someone owns a firearm. There also are regional divisions, with support for gun control typically highest in the Northeast and lowest in the South.

These differences, however, generally fade on the issues on which agreement is most broad – background checks, a gun database and banning high-capacity magazines.

Patterns are different in support for armed guards in schools; this idea is more popular with conservatives versus liberals (63 versus 44 percent), in red versus blue states (67 versus 49 percent) and among Republicans versus Democrats and independents (65 versus 52 percent). It also gets more support from parents with minor children, 62 percent, versus 51 percent among other adults. In the biggest gap, the proposal for armed school guards is nearly 30 points more popular with people who see the NRA’s leadership favorably than among those who see it unfavorably, 69 versus 40 percent.

There are other differences among groups that inform views on gun control. Women, for instance, are 13 points more apt than men to say the Newtown shootings have made them more likely to support some forms of gun control, and 16 points more likely to be worried that a mass shooting could occur in their own area. That worry is a prime factor in support for stricter gun laws.

THE NRA – While recent polls have found the NRA to be popular overall with a majority of Americans, this survey finds a less positive assessment of the association’s leadership -  more see it unfavorably than favorably by an 8-point margin, 44 versus 36 percent, although many don’t know enough to say.

There’s a mixed result on the NRA’s influence on gun policy; on the one hand more, 38 percent, say it has too much influence versus too little (24 percent) or about the right amount (30 percent). At the same time, that makes a majority, netted, saying its influence is too little or about right.

The NRA’s leadership, naturally, has far more support among people in gun-owning versus non-gun-owning households – a 52 percent versus 22 percent favorable rating. Similarly, 49 percent in non-gun households say the NRA has too much influence over gun laws. In gun households 27 percent, agree.

METHODOLOGY – This ABC News/Washington Post poll was conducted by telephone Jan. 10-13, 2013, among a random national sample of 1,001 adults, including landline and cell-phone-only respondents. Results have a margin of sampling error of 3.5 points, including design effect. Partisan divisions are 33-24-37 percent, Democrats-Republicans-independents.

The survey was produced for ABC News by Langer Research Associates of New York, N.Y., with sampling, data collection and tabulation by Abt-SRBI of New York, N.Y.

Read More..

Benefits of emissions cuts kick in only next century

Are we the altruistic generation? Do we care what happens to our grandchildren, and to their children? Or are we with Groucho Marx when he said: "Why should I care about future generations? What have they ever done for me?"

A new study of climate change lays out in detail why this matters. According to its author, Nigel Arnell of the University of Reading, UK, the unpalatable truth is that even rapid action now to curb greenhouse gas emissions would have only a "negligible effect by 2030, and the benefits in 2050 would remain small". The big dividend – cooler temperatures, fewer floods and droughts and better crop yields, compared to carrying on as we are – would only become clear by about 2100.

Arnell and colleagues used climate models to look at how different policies to curb greenhouse gases would affect temperature, sea levels, crop yields and the incidence of droughts and floods. Two findings emerged. The first is that lags in the climate system mean the real benefits of cutting emissions will only show up late this century. This, says Arnell, underlines that there is a lot of global warming "in the pipeline" that cannot now be prevented.

But the study also shows that tackling climate change early brings big rewards. Arnell compared a policy of letting emissions peak in 2016 and then cutting them by 2 per cent a year with one that delays the peak till 2030 and then cuts by 5 per cent a year. He found that both restricted warming in 2100 to about 2 °C, but the climate disruption over the next century would be much less with the early start. Coastal flooding from sea-level rise in particular would be much reduced. This, he told New Scientist, contradicts a common view that drastic action to curb warming should wait for renewable energy to become cheaper.

"Arnell has shown just how crucial the emissions pathway we take today will be for our children and grandchildren," said Dave Reay, geoscientist at the University of Edinburgh, UK. Bill McGuire of University College London agrees: "It shows taking effective action now is far better than putting it off until later."

It's a shame, then, that even if all goes well with UN negotiations, no global deal to bring down emissions will come into force until at least 2020. Our great-great-grandchildren will be cursing our delay.

Journal reference: Nature Climate Change, DOI: 10.1038/NCLIMATE1793

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..

Pakistan sacks provincial government after Shiite killings

QUETTA: Pakistani Prime Minister Raja Pervez Ashraf on Monday sacked the provincial government in Baluchistan after meeting Shiite Muslim protesters demanding protection after a massive bomb attack.

Members of the minority community have refused to bury those killed on Thursday in Pakistan's worst sectarian bombings when suicide attackers killed 92 people at a crowded snooker hall in the provincial capital Quetta.

More than 120 were wounded in the attacks claimed by Sunni Muslim militant group Lashkar-e-Jhangvi in an area dominated by Shiites from the Hazara ethnic minority.

Shiite leaders said protesters would not call off their sit-in and bury their dead until they see official notification about steps announced by Ashraf after day break. Local TV stations showed footage of them still protesting.

The families have refused to bury loved ones until the authorities agree to put the security and administration of the city under army control.

The prime minister flew to Quetta on Sunday to listen to their grievances and announced live on television that he had accepted all their demands, including the sacking of the provincial government and the suspension of its legislature.

"We have decided to impose governor's rule in Baluchistan for two months, the provincial government will be sacked," Ashraf said after offering his condolences to grieved families.

"It is a national tragedy and the entire nation is saddened over it."

The governor can call on the army to help control the law and order situation whenever needed, the prime minister said.

He also directed the authorities to arrest the culprits behind attacks against the Shiite community and urged the families to bury their dead.

Refusing to bury the dead is an extreme protest in Islamic society, where the deceased are normally buried the same day or the next day.

The provincial government has been widely criticised in Baluchistan for being unable to control not just sectarian violence, but other attacks linked to a nearly nine-year separatist insurgency and to Islamist militants.

The sacked chief minister, Aslam Raisani, was criticised for making a trip to London while security deteriorated.

Shiites, who account for around 20 per cent of Pakistan's 180 million people, last year suffered record levels of violence according to Human Rights Watch.

- AFP/jc

Read More..

MIT to conduct internal probe in wake of Aaron Swartz's suicide

The Massachusetts Institute of Technology announced today it will conduct an internal investigation of the university's role in the circumstances that led to the suicide Friday of Internet activist Aaron Swartz.

Swartz, 26, was arrested in July 2011 and accused of stealing 4 million documents from MIT and Jstor, an archive of scientific journals and academic papers. Authorities claimed he broke into a restricted-access computer wiring closet at MIT and accessed that network without authorization.

Swartz, a Reddit cofounder who championed open access to documents on the Internet, faced $4 million in fines and more than 50 years in prison if convicted.

In a statement released today, MIT President L. Rafael Reif offered his condolences, saying that the school's community was "extremely saddened by the death of this promising young man who touched the lives of so many."

"Now is a time for everyone involved to reflect on their actions, and that includes all of us at MIT," Reif said. "I have asked professor Hal Abelson to lead a thorough analysis of MIT's involvement from the time that we first perceived unusual activity on our network in fall 2010 up to the present. I have asked that this analysis describe the options MIT had and the decisions MIT made, in order to understand and to learn from the actions MIT took. I will share the report with the MIT community when I receive it."

Critics of the prosecutors in the case say the feds were unfairly trying to make an example out of Swartz.

"Aaron's death is not simply a personal tragedy," Swartz's family said in a statement released yesterday. "It is the product of a criminal justice system rife with intimidation and prosecutorial overreach. Decisions made by officials in the Massachusetts U.S. Attorney's office and at MIT contributed to his death."

CNET has contacted the U.S. Attorney's office for comment and will update this report when we learn more.

MIT President L. Rafael Reif's letter:

To the members of the MIT community:

Yesterday we received the shocking and terrible news that on Friday in New York, Aaron Swartz, a gifted young man well known and admired by many in the MIT community, took his own life. With this tragedy, his family and his friends suffered an inexpressible loss, and we offer our most profound condolences. Even for those of us who did not know Aaron, the trail of his brief life shines with his brilliant creativity and idealism.

Although Aaron had no formal affiliation with MIT, I am writing to you now because he was beloved by many members of our community and because MIT played a role in the legal struggles that began for him in 2011.

I want to express very clearly that I and all of us at MIT are extremely saddened by the death of this promising young man who touched the lives of so many. It pains me to think that MIT played any role in a series of events that have ended in tragedy.

I will not attempt to summarize here the complex events of the past two years. Now is a time for everyone involved to reflect on their actions, and that includes all of us at MIT. I have asked Professor Hal Abelson to lead a thorough analysis of MIT's involvement from the time that we first perceived unusual activity on our network in fall 2010 up to the present. I have asked that this analysis describe the options MIT had and the decisions MIT made, in order to understand and to learn from the actions MIT took. I will share the report with the MIT community when I receive it.

I hope we will all reach out to those members of our community we know who may have been affected by Aaron's death. As always, MIT Medical is available to provide expert counseling, but there is no substitute for personal understanding and support.

With sorrow and deep sympathy,

L. Rafael Reif

Read More..

Pictures: Civil War Shipwreck Revealed by Sonar

Photograph by Jesse Cancelmo

A fishing net, likely only decades old, drapes over machinery that once connected the Hatteras' pistons to its paddle wheels, said Delgado.

From archived documents, the NOAA archaeologist learned that Blake, the ship's commander, surrendered as his ship was sinking. "It was listing to port, [or the left]," Delgado said. The Alabama took the wounded and the rest of the crew and put them in irons.

The officers were allowed to keep their swords and wander the deck as long as they promised not to lead an uprising against the Alabama's crew, he added.

From there, the Alabama dropped off their captives in Jamaica, leaving them to make their own way back to the U.S.

Delgado wants to dig even further into the crew of the Hatteras. He'd like see if members of the public recognize any of the names on his list of crew members and can give him background on the men.

"That's why I do archaeology," he said.

(Read about other Civil War battlefields in National Geographic magazine.)

Published January 11, 2013

Read More..