90 Miles From Tyranny

Monday, July 15, 2013

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ROBOTS TO REVOLUTIONIZE FARMING, REDUCE NEED FOR ILLEGAL ALIEN INVASION

SALINAS, Calif. (AP) -- On a windy morning in California's Salinas Valley, a tractor pulled a wheeled, metal contraption over rows of budding iceberg lettuce plants. Engineers from Silicon Valley tinkered with the software on a laptop to ensure the machine was eliminating the right leafy buds.

The engineers were testing the Lettuce Bot, a machine that can "thin" a field of lettuce in the time it takes about 20 workers to do the job by hand.

The thinner is part of a new generation of machines that target the last frontier of agricultural mechanization - fruits and vegetables destined for the fresh market, not processing, which have thus far resisted mechanization because they're sensitive to bruising.

Researchers are now designing robots for these most delicate crops by integrating advanced sensors, powerful computing, electronics, computer vision, robotic hardware and algorithms, as well as networking and high precision GPS localization technologies. Most ag robots won't be commercially available for at least a few years.

In this region known as America's Salad Bowl, where for a century fruits and vegetables have been planted, thinned and harvested by an army of migrant workers, the machines could prove revolutionary.

Farmers say farm robots could provide relief from recent labor shortages, lessen the unknowns of immigration reform, even reduce costs, increase quality and yield a more consistent product.

"There aren't enough workers to take the available jobs, so the robots can come and alleviate some of that problem," said Ron Yokota, a farming operations manager at Tanimura & Antle, the Salinas-based fresh produce company that owns the field where the Lettuce Bot was being tested.

Many sectors in U.S. agriculture have relied on machines for decades and even the harvesting of fruits and vegetables meant for processing has slowly been mechanized. But nationwide, the vast majority of fresh-market fruit is still harvested by hand.

Research into fresh produce mechanization was dormant for years because of an over-abundance of workers and pressures from farmworker labor unions.

In recent years, as the labor supply has tightened and competition from abroad has increased, growers have sought out machines to reduce labor costs and supplement the nation's unstable agricultural workforce. The federal government, venture capital companies and commodity boards have stepped up with funding.

"We need to increase our efficiency, but nobody wants to work in the fields," said Stavros G. Vougioukas, professor of biological and agricultural engineering at the University of California, Davis.

But farmworker advocates say mechanization would lead to workers losing jobs, growers using more pesticides and the food supply becoming less safe.

"The fundamental question for consumers is who and, now, what do you want picking your food; a machine or a human, who with the proper training and support, can" ... take significant steps to ensure a safer, higher quality product, said Erik Nicholson, national vice president of the United Farm Workers of America.

On the Salinas Valley farm, entrepreneurs with Mountain View-based startup Blue River Technology are trying to show that the Lettuce Bot can not only replace two dozen workers, but also improve production.

"Using Lettuce Bot can produce more lettuce plants than doing it any other way," said Jorge Heraud, the company's co-founder and CEO.

After a lettuce field is planted, growers typically hire a crew of farmworkers who use hoes to remove excess plants to give space for others to grow into full lettuce heads. The Lettuce Bot uses video cameras and visual-recognition software to identify which lettuce plants to eliminate with a squirt of concentrated fertilizer that kills the unwanted buds while enriching the soil.

Blue River, which has raised more than $3 million in venture capital, also plans to develop machines to automate weeding - and eventually harvesting - using many of the same technologies.

Another company, San Diego-based Vision Robotics, is developing a similar lettuce thinner as well as a pruner for wine grapes. The pruner uses robotic arms and cameras to photograph and create a computerized model of the vines, figure out the canes' orientation and the location of buds - all to decide which canes to cut down.

Fresh fruit harvesting remains the biggest challenge.

Machines have proved not only clumsy, but inadequate in selecting ripe produce. In addition to blunders in deciphering color and feel, machines have a hard time distinguishing produce from leaves and branches. And most importantly, matching the dexterity and speed of farmworkers has proved elusive.

"The hand-eye coordination workers have is really amazing, and they can pick incredibly fast. To replicate that in a machine, at the speed humans do and in an economical manner, we're still pretty far away," said Daniel L. Schmoldt at the U.S. Agriculture Department's National Institute of Food and Agriculture.

In southern California, engineers with the Spanish company Agrobot are taking on the challenge by working with local growers to test a strawberry harvester.

The machine is equipped with 24 arms whose movement is directed through an optical sensor; it allows the robot to make a choice based on fruit color, quality and size. The berries are plucked and placed on a conveyor belt, where the fruit is packed by a worker.

Still, the harvester collects only strawberries that are hanging on the sides of the bed, hence California's strawberry fields would have to be reshaped to accommodate the machine, including farming in single rows, raising the beds and even growing varieties with fewer clusters.

Experts say it will take at least 10 years for harvesters to be available commercially for most fresh-market fruit - not a moment too soon for farmers worried about the availability of workers, said Lupe Sandoval, managing director of the California Farm Labor Contractor Association.

"If you can put a man on the moon," Sandoval said, "you can figure out how to pick fruit with a machine."

The unbroken seal on King Tut's tomb

6 Mysterious Disappearances in U.S. History

The advent of cutting-edge forensic technology and DNA analysis techniques has shed new light on many of the world’s most famous—and infamous—disappearances. Still, some of the most puzzling cases remain unsolved—and some of them intersect with prominent figures and significant events in American history. From Jimmy Hoffa to the settlers of the doomed Lost Colony, these chillingly inexplicable disappearances continue to befuddle scholars and pique the public’s curiosity.

1. Jimmy Hoffa

Corbis

On July 30, 1975, James Riddle Hoffa, one of the most influential American labor leaders of the 20th century, disappeared in Detroit, Michigan, never to be heard from again. Born in 1913 to a poor coal miner in Indiana, the charismatic Hoffa proved a natural leader from a very young age. While working for a Detroit grocery chain he organized a labor strike that got him noticed by the powerful Teamsters union. Hoffa rose through the organization’s ranks over the next few decades and in 1957 took over its presidency. A savvy political playmaker and tireless advocate for the downtrodden, he became wildly popular within the Teamsters and beyond.

And yet, for all the battles he fought and won on behalf of American workers, Hoffa also had a dark side. During Hoffa’s tenure, Teamster leaders partnered with the Mafia in racketeering, extortion and embezzlement. Hoffa himself had relationships with high-ranking mobsters and was the target of several government investigations throughout the 1960s. Convicted first of obstruction of justice and later of attempted bribery, Hoffa began a 13-year prison sentence in March 1957. President Richard Nixon commuted the sentence in 1971, and Hoffa quickly began making a comeback within the Teamster leadership and penning his autobiography. These plans screeched to a halt, however, on July 30, 1975, when Hoffa was last seen in the parking lot of a Detroit restaurant, not far from where he got his start as a labor organizer. Though many have speculated that he was the victim of a Mafia hit, conclusive evidence was never found, and Hoffa’s fate remains shrouded in mystery to this day. He was declared legally dead in 1982.

2. Amelia Earhart

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Amelia Earhart’s daring round-the-world-flight was cut short when her Lockheed Electra disappeared over the Pacific Ocean on June 2, 1937. Within hours, rescue workers began scouring the area for signs of the famed aviator and her navigator, Fred Noonan. A living legend had vanished into thin air. In an official report, the U.S. government concluded that the two seasoned flyers, unable to locate their destination of Howland Island, ran out of fuel, crashed into the water and sank. Earhart was declared legally dead on January 5, 1939.

The question of why and where her plane went down, however, has never been put to rest. Indeed, in the seven decades since the Electra’s disappearance, a number of hypotheses have emerged. Some theorists, for instance, believe Earhart was actually a secret agent working for the U.S. government. They suggest that the plane crashed after its pilots intentionally deviated from their course to spy on Japanese-occupied islands in the Pacific, or that Earhart and Noonan landed on one of them and were taken prisoner. Yet another theory holds that Earhart returned safely to the United States, changed her name and lived a long life in obscurity. Another widely held belief is that Earhart and Noonan touched down on a remote South Pacific island called Nikumaroro and died there some time later.

3. The Mary Celeste

On a wintry November morning in 1872, Captain Benjamin Briggs, his wife Sarah, their 2-year-old daughter Sophia and a crew of seven set sail from New York Harbor on the Canadian-built brigantine Mary Celeste, bound for Genoa, Italy. Their journey quickly turned into one of history’s most chilling maritime mysteries. On December 4, some 600 miles west of Portugal, the helmsman of the merchant ship Dei Gratia spotted an odd sight through his spyglasses: a vessel with slightly torn sails that seemed to be careening out of control. The Dei Gratia’s captain, David Reed Morehouse, immediately identified the ship as the Mary Celeste; in a strange twist, he and Benjamin Briggs were old friends, and had dined together shortly before their respective departures from New York.

When a crew from the Dei Gratia boarded the Mary Celeste, almost everything was present and accounted for, from the cargo in the hold to the sewing machine in the captain’s cabin. Missing, however, were the ship’s only

5 Medical Innovations of the Civil War

IMAGE CREDIT:

GETTY IMAGES

by Chip Rowe

As it turns out, the bloodiest war in American history was also one of the most influential in battlefield medicine. Civil War surgeons learned fast, and many of their MacGyver-like solutions have had a lasting impact. Here are some of the advances and the people behind them.

1. Life-Saving Amputation

The General Who Visited His Leg

The old battlefield technique of trying to save limbs with doses of TLC (aided by wound-cleaning rats and maggots) quickly fell out of favor during the Civil War, even for top officers. The sheer number of injured was too high, and war surgeons quickly discovered that the best way to stave deadly infections was simply to lop off the area—quickly.

Among those saved by the saw was Daniel E. Sickles, the eccentric commander of the 3rd Army Corps. In 1863, at the Battle of Gettysburg, the major general’s right leg was shattered by a Confederate shell. Within the hour, the leg was amputated just above the knee. His procedure, publicized in the military press, paved the way for many more. Since the new Army Medical Museum in Washington, D.C., had requested battle-field donations, Sickles sent the limb to them in a box labeled “With the compliments of Major General D.E.S.” Sickles visited his leg yearly on the anniversary of its emancipation.

Amputation saved more lives than any other wartime medical procedure by instantly turning complex injuries into simple ones. Battlefield surgeons eventually took no more than six minutes to get each moaning man on the table, apply a handkerchief soaked in chloroform or ether, and make the deep cut. Union surgeons became the most skilled limb hackers in history. Even in deplorable conditions, they lost only about 25 percent of their patients—compared to a 75 percent mortality rate among similarly injured civilians at the time. The techniques invented by wartime surgeons—including cutting as far from the heart as possible and never slicing through joints—became the standard.

As for the nutty-sounding behavior of the leg-visiting commander, Sickles can be justifiably accused. In 1859, while serving in Congress, he shot and killed U.S. Attorney Philip Barton Key, the son of Francis Scott Key, for sleeping with Sickles’s wife. Charged with murder, Sickles became the first person in the United States to be found not guilty by reason of temporary insanity.

2. The Anesthesia Inhaler

A Knockout Breakthrough

In 1863, Stonewall Jackson’s surgeon recommended the removal of his left arm, which had been badly damaged by friendly fire. When a chloroform-soaked cloth was placed over his nose, the Confederate general, in great pain, muttered, “What an infinite blessing,” before going limp.

But such blessings were in short supply. The Confederate Army had a tough time securing enough anesthesia because of the Northern blockade. The standard method of soaking a handkerchief with chloroform wasted the liquid as it evaporated. Dr. Julian John Chisolm solved the dilemma by inventing a 2.5-inch inhaler, the first of its type. Chloroform was dripped through a perforated circle on the side onto a sponge in the interior; as the patient inhaled through tubes, the vapors mixed with air. This new method required only one-eighth of an ounce of chloroform, compared to the old 2-ounce dose. So while Union surgeons knocked out their patients 80,000 times during the war, rebels treated nearly as many with a fraction of the supplies.

3. Closing Chest Wounds

The Cub Doctor Who Kept Lungs From Collapsing

In the early part of the war, Benjamin Howard, a lowly young assistant surgeon, was shuttled to the sidelines with medical grunt work: changing bandages, suturing wounds, and grabbing grub for the docs. But when the other surgeons decided there was no point in treating chest wounds, Howard experimented with a new life-saving procedure.

At the onset of the war, a sucking chest wound was almost certainly a death sentence. Among French soldiers shot in the chest during the Crimean War (1853–1856), only 8 percent survived. The problem, as Howard came to realize, wasn’t the wound itself, but the sucking. The negative pressure in the thorax was created by the opening in the chest cavity. The effect often caused the lungs to collapse, leading to suffocation.

The cub doctor found that if he closed the wound with metal sutures, followed by alternating layers of lint or linen bandages and a few drops of collodion (a syrupy solution that forms an adhesive film when it dries), he could create an airtight seal. Survival rates quadrupled, and Howard’s innovation soon became standard treatment.

4. Facial Reconstruction

The Plastic Surgery Revolution

Carleton Burgan of Maryland was in terrible shape. The 20-year-old private had survived pneumonia, but the mercury pills he took as a treatment led to gangrene, which quickly spread from his mouth to his eye and led to the removal of his