শনিবার, ৪ মে, ২০১৩

How astronomy solved a Civil War mystery

Why did Confederate troops shoot their own general, 'Stonewall' Jackson? The position of the moon played a big role, an astronomer discovers.

By Clara Moskowitz,?Space.com / May 2, 2013

Thomas J. "Stonewall" Jackson is shown here in a photograph historians date to April 1863, just a few weeks before the Battle of Chancellorsville.

From the collection of Donald Olson

Enlarge

Thanks to astronomy, the 19th century mystery surrounding the death of Confederate general "Stonewall" Jackson during the Civil War may finally be solved.

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Lieutenant General Thomas J. "Stonewall" Jackson was a major?figure in the Civil War, second in command to Confederate general Robert E. Lee, when he was shot by friendly fire during the Battle of Chancellorsvilleon May 2, 1863. Shortly after that battle in northeastern Virginia, Jackson died of his wounds, leaving the Confederate army without one of its boldest military strategists just two months before the pivotal Battle of Gettysburg.

But exactly how Jackson's own troops could have mistaken him for the enemy has been unexplained until now. [Astronomy Detectives Solve Civil War Mystery (Photos)]

Famous "flank attack"

Firsthand accounts of the Chancellorsville battle describe how Jackson kept his troops fighting into the night ? a rarity at the time. That same day he had accomplished a major victory, squashing the Union's Twelfth Corps in a famous "flank attack." When the sun set that night and the sky darkened, Jackson pressed on, continuing the fighting by moonlight. It was then that a Confederate officer on the left wing of the 18th North Carolina regiment spotted Jackson and a group of riders coming toward him.

Mistaking his commander for advancing enemies, Major John Barry ordered his troops to fire. Jackson was hit with bullets in his right wrist and left arm, which had to be amputated, and died of complications from pneumonia eight days later.

Hi death has been described as a blow of bad luck, and Barry reportedly "felt extreme guilt over giving the command to fire," according to historian James Gillispie's book "Cape Fear Confederates" (McFarland, 2012).

But now, astronomers say they know why Barry couldn't identify his commander ? it's all because of?the moon. Astronomer Don Olson of Texas State University and Laurie E. Jasinski, a researcher and editor at the Texas State Historical Association, report their findings in the May 2013 issue of?Sky & Telescope?magazine.

Space sleuths

"I remembered reading long ago that Stonewall Jackson was wounded by 'friendly fire' and that it happened at night," Olson told SPACE.com in an email.?Olson decided to pursue the mystery on the occasion of the?battle's 150th anniversary.

Olson and Jasinski calculated the moon's position and the?lunar phase?using astronomical software, and figured out exactly where Jackson's party, as well as the 18th North Carolina regiment, would have been at the time of the shooting, around 9 p.m. that night. They used Confederate almanacs in Richmond at the Virginia Historical Society, as well as battle maps by Robert Krick, a military historian who is an expert on the Battle of Chancellorsville, Stonewall Jackson and the Civil War in Virginia.

"Once we calculated the?compass direction of the moon and compared that to the detailed battle maps published by Robert Krick, it quickly became obvious?how?Stonewall Jackson would have been seen as a dark silhouette, from the point of view of the 18th North Carolina regiment," Olson said.

Historical mysteries

Olson has?used astronomy to solve other historical whodunits?before. For example, he calculated the direction of moonlight on the night of Paul Revere's ride in 1775 to explain why Revere wasn't spotted by British sentries on a nearby ship, and exposed how moonlight allowed soldiers on the Japanese I-58 submarine to see, and sink, the USS Indianapolis in 1945.

"We are always interested in any historical event that happened at night ? very often, the moon plays an important role, as happened here," Olson said.

This latest discovery may help restore the reputation of Barry and the 18th North Carolina regiment, which "unfortunately became famous and best known for accidentally wounding Stonewall Jackson,"Gillispie wrote.

Jackson's death was mourned not just by his troops and fellow generals, but by the civilian public in the South. He is still regarded as one of the greatest military tacticians in U.S. history, and he earned his famous nickname for leading his troops to stand against attackers like a stone wall.

Without a trick of the moonlight on that fateful night, Jackson may not have died, and historians debate whether the outcome of the Battle of Gettysburg, or even the whole Civil War, would have been different.

Follow Clara Moskowitz on?Twitter?and?Google+. Follow us?@Spacedotcom,?Facebookand?Google+. Original article on?SPACE.com.

Copyright 2013?SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Source: http://rss.csmonitor.com/~r/feeds/science/~3/Davx4zGyxFk/How-astronomy-solved-a-Civil-War-mystery

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Malaria: A vector infecting both apes and humans

May 3, 2013 ? In 2010, a study revealed that the main agent of malaria in humans, called Plasmodium falciparum, arose from the gorilla. Today, the vector which transmitted the parasite from apes to humans has just been identified. A Franco-Gabonese research consortium has determined which species of anopheles mosquitoes transfer the disease to apes. Among them is Anopheles moucheti, known for biting humans. Therefore, it appears to be the species which originally infected us through our cousins. And it could do it again today.

The same vector

IRD and CNRS researchers, in addition to their Gabonese partners based in the CIRMF in Franceville, wanted to determine the identity of the mosquitoes which transmit malaria to apes. To this end, they caught a thousand mosquitoes of the Anopheles genus, in close proximity to groups of wild or semi-wild primates. They then conducted analyses on the insects collected, belonging to fifteen different species, in order to detect which ones were infected by the Plasmodium malaria parasites. Two species of mosquitoes were thus revealed to be contaminated by these pathogenic agents. Anopheles moucheti was one of them -- a major vector for humans in Central Africa. This species is therefore both primatophilic and anthropophilic. Since gorillas are the origin of the disease in humans, this species would have enabled the transmission of the infection from apes to humans thousands of years ago.

A relatively unknown disease

Despite its major impact on public health, particularly in sub-Saharan Africa, there are still several grey areas regarding the parasite and its vector. In particular, how the disease is transmitted to great apes was a controversial question until now. By analogy with the transmission methods observed in humans, scientists guessed that the mosquitoes concerned belonged to the Anopheles genus. However, they still needed to identify the species responsible for contamination among great apes, or those species that transferred the infectious agents from gorillas to humans in the past.

The same parasites

Not long ago, the evolutionary history of pathogens was also unknown. Over the last 5 years, several species of Plasmodium were discovered in our close cousins, gorillas and chimpanzees. Researchers believed that some of them were specific to humans. In gorillas, they recently described P. praefalciparum, which is the closest genetic relative of P. falciparum, the most virulent infectious agent.

Anopheles moucheti could continue to transfer parasites from one mammal to another even today. As such, apes could be a reservoir for humans. The increasingly close interaction between humans and apes, due to deforestation and hunting activities, once again raises the question of the possible eradication of the disease. Conversely, the already documented transfer of the disease from humans to apes could also occur, thereby threatening populations that are already highly endangered.

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Story Source:

The above story is reprinted from materials provided by Institut de Recherche pour le D?veloppement (IRD).

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. Christophe Paupy, Boris Makanga, Benjamin Ollomo, Nil Rahola, Patrick Durand, Julie Magnus, Eric Willaume, Fran?ois Renaud, Didier Fontenille, Franck Prugnolle. Anopheles moucheti and Anopheles vinckei Are Candidate Vectors of Ape Plasmodium Parasites, Including Plasmodium praefalciparum in Gabon. PLoS ONE, 2013; 8 (2): e57294 DOI: 10.1371/journal.pone.0057294

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/LEed0ZFGUxo/130503094708.htm

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Video: Obama nominates Penny Pritzker as secretary of commerce (cbsnews)

Share With Friends: Share on FacebookTweet ThisPost to Google-BuzzSend on GmailPost to Linked-InSubscribe to This Feed | Rss To Twitter | Politics - Top Stories News, RSS Feeds and Widgets via Feedzilla.

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Miami cop fired 8 times could get fired again

May 1 (Reuters) - Post position for Saturday's 139th Kentucky Derby at Churchill Downs after Wednesday's draw (listed as barrier, HORSE, jockey, trainer) 1. BLACK ONYX, Joe Bravo, Kelly Breen 2. OXBOW, Gary Stevens, D. Wayne Lukas 3. REVOLUTIONARY, Calvin Borel, Todd Pletcher 4. GOLDEN SOUL, Robby Albarado, Dallas Stewart 5. NORMANDY INVASION, Javier Castellano, Chad Brown 6. MYLUTE, Rosie Napravnik, Tom Amoss 7. GIANT FINISH, Jose Espinoza, Tony Dutrow 8. GOLDENCENTS, Kevin Krigger, Doug O'Neill 9. OVERANALYZE, Rafael Bejarano, Todd Pletcher 10. PALACE MALICE, Mike Smith, Todd Pletcher 11. ...

Source: http://news.yahoo.com/blogs/sideshow/miami-cop-fired-8-times-141430862.html

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Philz Coffee Raises Eight-Figure Round From Summit, Angels, As Specialty Coffee Market Heats Up

Screen shot 2013-05-01 at 8.29.12 PMI've found that when people visit San Francisco, it's not unusual to hear them ask something like: "No seriously, is there a coffee shop on every block in this city?" Yes, San Francisco likes coffee. So do a lot of cities. Busy people thrive on coffee, especially in the tech industry. In fact, some would even say that a substantial amount of coffee is an essential ingredient to success.

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Kris Kross' Chris Kelly: Nicki Minaj, Ludacris, Big Boi Pay Tribute

So sorry to hear that. Sending love to his family,' writes Minaj.
By Gil Kaufman

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বৃহস্পতিবার, ২ মে, ২০১৩

Paula Broadwell makes public appearance

Gen. David Petraeus and Paula Broadwell before the scandal.(Getty Images)

Paula Broadwell, the woman at the center of the 2012 sex scandal that rocked the Central Intelligence Agency and led to the resignation of its director, Gen. David Petraeus, has not spoken publicly since their affair was first reported in November.

But Broadwell, who wrote Petraeus' biography, "All In," attended an annual YMCA prayer breakfast in Charlotte, N.C., on Tuesday and spoke afterwards with Raleigh's Newschannel 14.

?The mission today, the prayer breakfast today, was to speak about redemption and slowing down in life and finding purpose,? the 40-year-old author said. ?It really touched my heart. I've made some mistakes in the past, but I'm trying to look forward with my family."

"All In" was published in January 2012. On Nov. 9, 2012, Petraeus resigned, confessing to having shown "extremely poor judgment by engaging in an extramarital affair," which was exposed after Broadwell sent a threatening email to Jill Kelley, a Tampa socialite, allegedly warning Kelley to stay away from Petraeus.

The former Army general had rocketed to global prominence as the man in charge of the "surge" in Iraq and later as the commander of American forces in Afghanistan.

?I grew up in a strong, faith-based family,? Broadwell said. ?I think I have selected to return to those roots for strength, for my family, for myself and to protect our children and to forgive others and move on and face forward.?

Broadwell made no mention of the scandal, though it's not clear she was asked to.

?I'm not seeking publicity,? Broadwell continued. ?I'm seeking meaningful work. I've been involved in a number of wounded warrior organizations and veteran support initiatives in our community."

She added, ?First and foremost, I've been focusing on my family. And again, this whole breakfast is a reminder of what should be first in one's life, and I'm thankful to have that reminder. At the end of the day, I count my blessings being in this wonderful country and our wonderful community and having such a wonderful family and opportunities and the opportunity to rebuild."

Source: http://news.yahoo.com/blogs/lookout/paula-broadwell-speaks-petraeus-124436306.html

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