K-12 schools in at least three states have been targeted for extortion by hackers, and institutions of higher education may be subject to the same cyberthreat, a cybersecurity official at the U.S. Department of Education warned this week.
Recent cases emphasize how critical it is for schools and colleges to anticipate a cyberattack and for IT staff to take the necessary measures to protect their institutions, the official said Monday. Read Article: http://edscoop.com/ed-department-warns-of-new-cyberthreat-against-schools For the first time, astronomers have directly measured the distance to a spot clear across the galaxy. The established but challenging technique promises a new way to map the structure of the Milky Way.
This technique, called parallax, has measured distances to stars since the 1830s. But because of galactic dust in the way, it has been difficult to use parallax on stars on the opposite side of the galaxy. Other ways to measure distance are saddled with assumptions and uncertainties. Read Article: https://www.sciencenews.org/blog/science-ticker/distance-milky-way-galaxy-parallax?tgt=nr When scientists excavated a 40,000-year-old skeleton in China in 2003, they thought they had discovered the offspring of a Neandertal and a modern human. But ancient DNA now reveals that the “Tianyuan Man” has only traces of Neandertal DNA and none detectable from another type of extinct human known as a Denisovan. Instead, he was a full-fledged member of our species, Homo sapiens, and a distant relative of people who today live in East Asia and South America. The work could help scientists retrace some of the earliest steps of human migration.
“The paper is very exciting because it is the first genome to fill a really big gap, both geographically and temporally, in East Asia,” says paleogeneticist Pontus Skoglund of Harvard Medical School in Boston, who was not involved in the work. Read Article: http://www.sciencemag.org/news/2017/10/was-ancient-person-china-offspring-modern-humans-and-neandertals Yep, we’re not really sure what to make of it, so we’ll just go ahead and tell you the facts. Just a week or two ago Pisa’s culture commissioner announced that those visiting Pisa to see its Leaning Tower (most people, assumedly) will now be able to see it from atop a giant Ferris wheel. This wheel is expected to stand 165 feet in the air and be located in a nearby parking lot. To the uninitiated, this might not seem conducive to the nicest views, but apparently visitors will be able to see both the top of the Leaning Tower and the Mediterranean Sea from it. Read Article: https://www.intrepidtravel.com/adventures/pisa-ferris-wheel/ When Irfan Rahman talked to young vapers, some complained of bleeding mouths and throats. And these bloody sores seemed slow to heal. Such reports concerned this toxicologist at the University of Rochester in New York. So he decided to investigate what the vapors inhaled from electronic cigarettes might be doing to mouth cells.
Last October, his team showed those vapors inflame mouth cells in ways that could potentially promote gum disease. That gum damage can destroy the tissues that hold teeth in place. So severe gum disease could lead to tooth loss. Explainer: What are e-cigarettes? But that’s hardly the end of it. Read Article: https://www.sciencenewsforstudents.org/article/concerns-explode-over-new-health-risks-vaping It’s easy to think that the globe’s vast oceans would be effective barriers to the movement of land animals. An elephant can’t swim across the Pacific, after all. But it turns out that plenty of plants and animals — and even people — have unintentionally floated across oceans from one continent to another. Now comes evidence that tiny, sedentary trapdoor spiders made such a journey millions of years ago. That voyage took them from Africa all the way across the Indian Ocean to Australia.
Moggridgea rainbowi spiders can be found on Kangaroo Island. It sits off the south coast of Australia. These trapdoor spiders build a silk-lined burrow in the ground with a secure-fitting lid, notes Sophie Harrison. She is a biologist in Australia at the University of Adelaide. The burrow and trapdoor provide these spiders with shelter and protection. It also offers them an out-of-sight spot from which to await approaching prey. And it means that the spiders don’t really need to travel more than a few meters (yards) over the course of a lifetime. Read Article: https://www.sciencenewsforstudents.org/article/become-australians-these-spiders-crossed-ocean Social Media:
https://www.facebook.com/david.lo.9003 https://twitter.com/davidloteacher1 https://www.linkedin.com/in/david-lo/ Blogs: https://davidloteacher.tumblr.com https://davidloteacher.wordpress.com/ http://davidloteacher.weebly.com/ Websites: http://david-lo.org/ http://david-lo.net/ http://david-lo.com/ http://david-lo-info.com/ http://about-david-lo.com/ Colleges typically offer two early admissions options – early action, in which students receive a non-binding offer of admission, and early decision, in which students, if accepted, must attend the college in question.
While one can argue that there are few drawbacks to early action, early decision (or ED, for short) is another matter. Students who are considering applying ED to a school should weigh a number of questions very carefully before deciding on this path. While applying early decision can open doors that may otherwise have been difficult to enter, its binding nature also closes a number of other doors if you are admitted. Here are four important questions to ask yourself before applying to a college ED: Read Aricle: https://www.usnews.com/education/blogs/college-admissions-playbook/2015/09/21/ask-yourself-these-4-questions-before-you-apply-early-decision?src=usn_tw A Neandertal child whose partial skeleton dates to around 49,000 years ago grew at the same pace as children do today, with a couple of exceptions. Growth of the child’s spine and brain lagged, a new study finds.
It’s unclear, though, whether developmental slowing in those parts of the body applied only to Neandertals or to Stone Age Homo sapiens as well. If so, environmental conditions at the time — which are currently hard to specify — may have reduced the pace of physical development similarly in both Homospecies. Read Article: https://www.sciencenews.org/article/neandertal-kids-were-lot-kids-today-least-how-they-grew Swedish inventor Torbjørn Ludvigsen has spent the last three years developing a new kind of large-format 3D printer that can build furniture-sized objects in any room — surprisingly easily and relatively cheaply. Ludvigsen's invention, the Hangprinter, employs a system of wires and computer-controlled pulleys anchored to the walls, floor, and ceiling. Once installed, the Hangprinter essentially uses the room itself as a casing.
Read Article: https://www.livescience.com/58250-hangprinter-system-turns-entire-room-into-3d-printer.html |
AuthorDavid Lo |