Tuesday, December 25, 2018

News

Koreas hold groundbreaking ceremony for railway project

South Korean Unification Minister Cho Myoung-gyon, bottom left, and officials arrive to board a train to leave for the North Korea at the Seoul Railway Station in Seoul, South Korea, Wednesday, Dec. 26, 2018. South Korean officials have traveled to North Korea by train to attend a groundbreaking ceremony for an aspirational project to modernize North Korean railways and roads and connect them with the South. (Jin Sung-chul/Yonhap via AP)
SEOUL, South Korea (AP) — South Korean officials have traveled to North Korea by train to attend a groundbreaking ceremony for an aspirational project to modernize North Korean railways and roads and connect them with the South.
Wednesday's ceremony at the North Korean border town of Kaesong comes weeks after the Koreas conducted a joint survey on the northern railway sections they hope to someday link with the South.
The ambitious project is among a variety of peace gestures agreed between North Korean leader Kim Jong Un and liberal South Korean President Moon Jae-in as they push ahead with engagement amid a stalemate in larger nuclear negotiations between Washington and Pyongyang.
But beyond on-site reviews and ceremonies, the Koreas cannot move the project much further along without the removal of U.S.-led sanctions against the North.
During his three summits with Moon and a meeting with President Donald Trump in June, Kim signed vague statements pledging a nuclear-free Korean Peninsula without describing how and when it would occur. But followup nuclear talks between Washington and Pyongyang have stalled for months over the sequencing of the denuclearization that Washington wants and the removal of international sanctions desired by Pyongyang.
South Korea's Unification Ministry, which handles inter-Korean affairs, said the Seoul government plans to conduct further surveys on North Korean railways and roads before drawing up a detailed blueprint for the project.
"Actual construction will be pursued in accordance with progress in the North's denuclearization and the state of sanctions against the North," the ministry said in a statement.
Even if the North takes concrete steps toward denuclearization and gains sanctions relief, some experts say updating North Korean rail networks and trains, which creak slowly along the rails that were first built in the early 20th century, could take decades and massive investment.
Seoul said it received an exemption to sanctions from the U.N. Security Council to proceed with Wednesday's ceremony as it involved the usage of South Korean transport vehicles and goods. The Koreas' joint survey of North Korean railways in November, which also required U.N. approval, marked the first time a South Korean train traveled on North Korean tracks.
The Koreas in December 2007 began freight services between South Korea's Munsan Station in Paju and the North's Panmun Station to support operations at a now-shuttered joint factory park in Kaesong. The South used the trains to move construction materials north, while clothing and shoes made at the factory park were sent south. The line was cut in November 2008 due to political tensions over North Korea's nuclear ambitions.
The Kaesong factory park was shut down under the South's previous conservative government in February 2016 following a North Korean nuclear test and long-range rocket launch.

Thursday, March 1, 2018

Science

The ice on Lake Michigan has turned blue. Here's why.

Mark Kaufman
The ice on portions of Michigan's Great Lakes has turned blue, but don't worry, there's a perfectly good reason why. 
The phenomenon is common on glaciers, but not so much on large swathes of lake ice. It's happening where Lake Michigan meets Lake Huron, at a place called the Straits of Mackinac. There, fat slabs and mounds of cracked blue ice have collected near the shorelines.
Local photographer Tori Burley captured the image above. 
The ice, however, is not actually turning blue. The color is a result of the way sunlight is bouncing off this particular ice, explained Ted Scambos, a research scientist at the National Snow and Ice Data Center, in an interview. 
Sometimes, weather conditions — such as a lack of high winds — allow water to freeze slowly and evenly, resulting in ice composed of large crystals (unlike snow, which is formed quickly and made up of small crystals). 
When light hits these big ice crystals, it can travel deep into the structures (compare this to snow, wherein light hits a sharp edge and reflects off of it right away, resulting in blinding white). When the light travels deeper into slowly formed ice, some of the red wavelengths of sunlight — which is the longest wavelength of visible light — get absorbed into the ice structure. 
The blue, which is the shortest wavelength of visible light, bounces back out, meet our eyes, and results in a deep aqua color.  
Sunlight reflecting off the Thwaites glacier in Antarctica, which makes the water look an aqua color.
Image: nasa
But this isn't the complete story. Blue ice is also composed of relatively pure, untainted water, which allows the blue reflection to be so vivid and dominant.
"It's a tribute to how clean the upper surface of Lake Michigan is," said Scambos, adding, "At least somewhere in Lake Michigan." 

WATCH: 'Beast from the East' to plunge UK, rest of Europe into historic deep freeze

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Saturday, January 27, 2018

News

Rare 'super blood blue moon' visible on Jan 31

Kerry SHERIDAN
A supermoon rises over Washington on December 3, 2017 in this handout photo provided by NASA (AFP Photo/NASA)
Miami (AFP) - A cosmic event not seen in 36 years -- a rare "super blood blue moon" -- may be glimpsed January 31 in parts of western North America, Asia, the Middle East, Russia and Australia.
The event is causing a buzz because it combines three unusual lunar events -- an extra big super moon, a blue moon and a total lunar eclipse.
"It's an astronomical trifecta," said Kelly Beatty, a senior editor at Sky and Telescope magazine.
A blue moon refers to the second full moon in a month. Typically, a blue moon happens every two years and eight months.
This full moon is also the third in a series of "supermoons," which happen when the moon is closest to Earth in its orbit.
This point, called the perigee, makes the moon appear 14 percent larger and 30 percent brighter.
During the eclipse, the moon will glide into Earth's shadow, gradually turning the white disk of light to orange or red.
"That red light you see is sunlight that has skimmed and bent through Earth's atmosphere and continued on through space to the moon," said Alan MacRobert of Sky and Telescope magazine.
"In other words, it's from all the sunrises and sunsets that ring the world at the moment."
The alignment of the sun, moon and Earth will last one hour and 16 minutes, visible before dawn across the western United States and Canada.
Those in the Middle East, Asia, eastern Russia, Australia and New Zealand should look for it in the evening, as the moon rises.
Unlike a solar eclipse, this lunar eclipse can be safely viewed without protective eyewear.
- How rare? -
"We've had a lot of supermoons and we've had lunar eclipses, but it's rare that it also happens to be a blue moon," said Jason Aufdenberg, associate professor of physics and astronomy at Embry-Riddle Aeronautical University's campus in Daytona Beach, Florida.
"All three of these cycles lining up is what makes this unusual," he added.
"It's just a wonder to behold."
According to Sky and Telescope magazine, "the last time a complete lunar cover-up took place on the second full moon of the month was December 30, 1982, at least as reckoned by local time in Europe, Africa, and western Asia -- locations where the event could be seen."
That event also occurred at the moon's orbital perigee, making it an extra bright supermoon.
Aufdenberg said that by his calculations, the last time a supermoon, blue moon and total lunar eclipse all together were visible from the eastern United States was on May 31, 1844.
According to Sky and Telescope, the last blue moon total lunar eclipse visible from North America happened on March 31, 1866.
"But on that date the moon was near apogee, its most distant point from Earth," it said.
Lunar eclipses during a supermoon happen rather regularly. The last one was in September 2015.
Lunar eclipses occur at least twice a year.
Supermoons can happen four to six times a year.
The next supermoon lunar eclipse visible throughout all of the United States will be January 21, 2019 -- though that one will not be a blue moon.
World

Philippines warns of volcanic mudflows from heavy rains

By Ronn Bautista
1 / 10

A resident wades through a river with lahar flow coming from Mount Mayon volcano in Guinobatan, Albay province, south of Manila

A resident wades through a river with lahar flow coming from Mount Mayon volcano in Guinobatan, Albay province, south of Manila, Philippines January 27, 2018. REUTERS/Romeo Ranoco
By Ronn Bautista
LEGAZPI CITY, Philippines (Reuters) - Residents around an erupting volcano in central Philippines have should prepare to flee to safer areas because of risks from huge debris that could be swept from slopes by heavy rains, state volcanologists said on Saturday.
The most active volcano in the poor Southeast Asian country has been spewing lava and ash for the last two weeks and may have a major eruption within days, the Philippine Institute of Volcanology and Seismology said.
The provincial government has expanded its danger zone to a 9 km (5.6 miles) radius of Mount Mayon in Albay province from the 8 km radius set by volcanologists.
More than 75,000 people had been moved out from the danger zone to sheltered areas but many farmers and quarry workers were defying evacuation orders to work in stone quarries, on farms, and to tend livestock.
"It's a real threat so we are urging everyone to prepare and evacuate when told by authorities," said Mariton Bornas, head of the volcanology agency's monitoring and eruption prediction, adding there are fresh lahar (mudflow) deposits in the 2,462 meter (8,977 feet) Mayon's slopes.
"It's really a dangerous combination for the communities. Lahar from Mayon can carry huge boulder and it can bury communities, wash away people and everything in its path, but also because of impact."
She said boulders as huge as cars and houses could roll down Mayon’s slopes swiftly in minutes.
Heavy rains poured in central Philippines, flooding shelter areas and raising risks of lahar flows.
In Salvacion village, many farmers were sneaking inside the danger zone to plant and look after farm animals saying they need to earn a living.
"I don't think the volcano will erupt,” Istong Jayvee told Reuters. “It already let out fire. It will quiet down soon."
Farm worker Edna Medina said they are ready anytime to flee when the volcano erupts.
"When the volcano does erupt, we'll get out of here using our motorcycle then head straight for the main road out,” she added.
Volcanologists have raised Mayon’s alert to level 4, one notch below the highest level.
(Reporting by Ronn Bautista Writing by Manuel Mogato Editing by Jeremy Gaunt.)