Month: December 2016

Photos of Freak Snowfall in the Sahara Look Unreal

The Algerian town of Ain Sefra is known as the Gateway to the Sahara, and it’s not the kind of place that gets associated with winter weather. So imagine the surprise of amateur photographer Karim Bouchetata when he awoke to see his picturesque town and the surrounding sand dunes covered in a blanket of snow. Thankfully for us, he grabbed his camera. Read more…

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Photos of Freak Snowfall in the Sahara Look Unreal

Largest digital survey of the sky mapped billions of stars

An international team of astronomers have released two petabytes of data from the Pan-STARRS project that’s also known as the “world’s largest digital sky survey.” Two petabytes of data, according to the team, is equivalent to any of the following: a billion selfies, one hundred Wikipedias or 40 million four-drawer filing cabinets filled with single-spaced text. The scientists spent four years observing three-fourths of the night sky through their 1.8 meter telescope at Haleakala Observatories on Maui, Hawaii, scanning three billion objects in the Milky Way 12 times in five different filters. Those objects included stars, galaxies, asteroids and other celestial bodies. According to Thomas Henning, director of the Planet and Star Formation Department of Max Planck Institute for Astronomy: “Based on Pan-Starrs, researchers are able to measure distances, motions and special characteristics such as the multiplicity fraction of all nearby stars, brown dwarfs, and of stellar remnants like, for example white dwarfs. This will expand the census of almost all objects in the solar neighbourhood to distances of about 300 light-years. The Pan Starrs data will also allow a much better characterization of low-mass star formation in stellar clusters. Furthermore, we gathered about 4 million stellar light curves to identify Jupiter-like planets in close orbits around cool dwarf stars in order to constrain the fraction of such extrasolar planetary systems.” While the immensity of two petabytes of data is already hard to grasp, that isn’t the extent of the team’s observations. The astronomers are rolling out their research in two steps: this one called the “Static Sky” is the average of each individual scan. See the image above? That’s the result of half a million 45-second exposures taken over four years. They’re releasing even more detailed images and data in 2017 — for now, you can check out what the team released to the public on the official Pan-STARRS website. Via: TechCrunch Source: Queen’s University Belfast , Pan-STARRS , Physorg

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Largest digital survey of the sky mapped billions of stars

Pregnancy Alters Woman’s Brains ‘For At Least Two Years’

EzInKy writes: The BBC and others are reporting the results of a study that women’s brains do in fact change during pregnancy. BBC reports: “Pregnancy reduces grey matter in specific parts of a woman’s brain, helping her bond with her baby and prepare for the demands of motherhood. Scans of 25 first-time mums showed these structural brain changes lasted for at least two years after giving birth. European researchers said the scale of brain changes during pregnancy were akin to those seen during adolescence. But they found no evidence of women’s memory deteriorating. This study, from researchers at the Universitat Autonoma de Barcelona and Leiden University and published in Nature Neuroscience, looked at the brain scans of women before they became pregnant, soon after they gave birth, and two years later, to see how the brain changed. And they compared these women’s brains with those of 19 first-time fathers, 17 men without children and 20 women who had never given birth. The researchers found ‘substantial’ reductions in the volume of grey matter in the brains of first-time mothers. The grey matter changes occurred in areas of the brain involved in social interactions used for attributing thoughts and feelings to other people — known as ‘theory-of-mind’ tasks. The researchers thought this would give new mothers an advantage in various ways – help them recognize the needs of their child, be more aware of potential social threats and become more attached to their baby.” Thanks Mom! As for first-time fathers, the researchers found no changes in their grey matter. Read more of this story at Slashdot.

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Pregnancy Alters Woman’s Brains ‘For At Least Two Years’

Uber Lost $800 Million In Third Quarter

According to a report from The Information (Warning: paywalled), Uber has lost more than $800 million in the third quarter. CNBC reports: The results, The Information reported, put Uber on pace to record an 25 percent steeper operating loss than last year, of at least $2.8 billion in 2016, before interest, tax, depreciation and amortization. Despite steep results from one of the world’s most valuable start-ups, these results would have been worse if not for a one-time windfall thanks to the sale of Uber’s China business to Didi Chuxing, The Information reported. On the bright side, Uber’s revenue is skyrocketing, and its rate of losses slowed from the prior quarter, The Information said. Still, the report comes as Uber’s multi-billion dollar valuation has come under scrutiny from those who say its business model depends on subsidies and faces looming battles over regulation. Read more of this story at Slashdot.

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Uber Lost $800 Million In Third Quarter

Nigerian Man Charged in Hacking of Los Angeles County Emails

A ‘mere’ 10.8% phishing success rate has forced Los Angeles County to notify approximately 756, 000 individuals that their personal information may have been compromised. The attack occurred on May 13, 2016 when 1, 000 County employees received phishing emails. 108 employees were successfully phished. A Nigerian national has been charged in connection with the hack. From a report on The Guardian: Many large organizations would welcome a 10% success rate in their internal anti-phishing training sessions, with 30% and above being common. The 2016 Verizon DBIR suggests that 30% of all phishing emails are opened. The high number of individuals affected from a relatively low number of successes in LA County demonstrates how dangerous phishing attacks can be. The nature of the potentially compromised information is also concerning. “That information may have included first and last names, dates of birth, Social Security numbers, driver’s license or state identification numbers, payment card information, bank account information, home addresses, phone numbers, and/or medical information, such as Medi-Cal or insurance carrier identification numbers, diagnosis, treatment history, or medical record numbers, ” said the County of Los Angeles Chief Executive Office in a statement. Read more of this story at Slashdot.

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Nigerian Man Charged in Hacking of Los Angeles County Emails

China Chokes On Smog So Bad That Planes Can’t Land

Major cities across northern China choked Monday under a blanket of smog so thick that industries were ordered shut down and air and ground traffic was disrupted. From a report: At least 23 cities issued red alerts for a swath of pollution that has hovered over much of the nation since Friday, China’s Xinhua news agency reported. Alerts are expected to remain in effect through Wednesday. Hospitals set emergency procedures in motion to deal with an influx of breathing-related illnesses. Large hospitals in the port city of Tianjin, less than 100 miles southeast of Beijing, saw a surge in asthma and other respiratory issues, China’s People’s Daily reported. The pollution forced the city to close the highways and caused delays and cancellations for dozens of flights, Xinhua said. Read more of this story at Slashdot.

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China Chokes On Smog So Bad That Planes Can’t Land

Physicists learn how to measure antimatter

As you might guess, measuring antimatter is rather tricky: it’s destroyed the moment it comes into contact with regular matter, so conventional approaches just aren’t going to cut it. Give credit to CERN, then, as its Alpha group just measured antimatter for the first time. The team stuffed positrons (positively charged electrons) and antiprotons (protons with a negative charge) into a vacuum tube to create antihydrogen, with a “magnetic trap” keeping a small number of the anti-atoms in existence for long enough to measure them. The team then blasted the antimatter with a laser to study its positrons as they shifted energy levels, producing a spectral line. The results aren’t shocking — surprise, antihydrogen behaves much like regular hydrogen (just with reversed charges). If it didn’t, scientists would have to rethink their understanding of physics. The very act of measuring is important, though. In addition to shedding light on the nature of antimatter, it also tells scientists something about the nature of the universe. In theory, matter and antimatter should have destroyed each other almost immediately. The new findings don’t explain why that didn’t happen, but they suggest that it isn’t due to the inherent nature of those substances. Via: NPR , Popular Mechanics Source: CERN , Nature

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Physicists learn how to measure antimatter

Two Billion-Year-Old Water Found in Canadian Mine

Scientists have uncovered 2 billion-year-old water in an Ontario mine. (Image: University of Toronto) Canadian Geoscientists have uncovered water that dates back a whopping two billion years. It’s the oldest water ever discovered on Earth, and it could broaden our understanding of how life emerged on our planet—and possibly elsewhere. Read more…

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Two Billion-Year-Old Water Found in Canadian Mine