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January 4th, 2018

MakerBot Thingiverse 3D printing library targeted in cryptocurrency mining attack

January is hitting hard for Thingiverse, thanks to a recent attack by a group of malicious cryptocurrency miners that for now, remains anonymous. Earlier today the massive 3D printing file repository and community made headlines as parent company MakerBot issued a statement detailing the attack. via 3ders.org, http://ift.tt/2Cq7xQM

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Sanctuary on side of Mexican volcano could be universe model

A team of archaeologists in Mexico have discovered a stone shrine in a pond that depicts the design of the universe, as imagined by ancient Aztec civilisations. The stone “tetzacualco” or sanctuary was found at Nahualac, a site at the foothills of the Iztaccihuatl volcano. Aerial view of the tetzacualco (shrine) after water was drained out of the lake  [Credit: …Continue reading →

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Researchers show high-performance breathing in bones

Dinosaurs are far from extinct, but dominate as birds still most regions of the globe. Part of this huge success is due to the evolution of air sacs, which are crucial for the high efficiency of their respiratory system. Scientists at the University of Bonn analyzed the structure of bones that are in contact with air sacs and found both …Continue reading →

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Scientists find surprising evidence of rapid changes in the Arctic

Scientists have found surprising evidence of rapid climate change in the Arctic: In the middle of the Arctic Ocean near the North Pole, they discovered that the levels of radium-228 have almost doubled over the last decade. Scientists aboard the icebreaker Healy measured seawater chemistry across the Arctic Ocean and found that  levels of radium-228 have almost doubled over the last …Continue reading →

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A deep look into the hearts of stars

At first glance, it would seem to be impossible to look inside a star. An international team of astronomers, under the leadership of Earl Bellinger and Saskia Hekker of the Max Planck Institute for Solar System Research in Göttingen, has, for the first time, determined the deep inner structure of two stars based on their oscillations. A glimpse into the …Continue reading →

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The geometry of nuclear black hole accretion disks

Supermassive black holes with millions or even billions of solar-masses of material are found at the nuclei of most galaxies, including our Milky Way. A torus of dust and gas orbits around the black hole (at least according to most theories) and radiates in ultraviolet light when material falling toward the black hole heats the disk to millions of degrees. …Continue reading →

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Russell AMPro Sieve Station is a new powder management system for metal 3D printing

As 3D printing grows in popularity, metal AM is likely to contribute the most to the world of manufacturing. Stereolithography and other techniques are a great way to produce quality metal parts or prototypes, and the equipment and apparatus used continues to progress according to specific needs. via 3ders.org, http://ift.tt/2CEHucG

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Research reveals evidence of new population of ancient Native Americans

Genetic analysis of ancient DNA from a 6-week-old infant found at an Interior Alaska archaeological site has revealed a previously unknown population of ancient people in North America. The findings, published in the journal Nature, represent a major shift in scientists’ theories about how humans populated North America. The researchers have named the new group “Ancient Beringians.” Excavations at the …Continue reading →

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Greece shuts down ancient Nemea site says archaeologist who recovered it

The American archaeologist who masterminded the recovery of the ancient site in Nemea says that because of lack of guards, the site is in effect off limits to visitors for much of the year. In a letter to the Greek Reporter, Stephen G. Miller, who was head of excavations at the ancient site since 1973, expresses his frustration that his …Continue reading →

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Cultural evolution has not freed hunter-gatherers from environmental forcing

Because of culture, humans are often considered to be divorced from the environment and not under the same ecological forcing as other species. However, in a new paper published in Proceedings of the National of Sciences scientists from the University of Helsinki, Faculty of Science, show that key environmental parameters, namely climate-related primary productivity, biodiversity, and pathogen stress have strong influence …Continue reading →

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