1. Science

    Cells Trapped in Nanoscale Pyramids for Study in 3D

    Researchers looking for new insights on how cells interact in three dimensions have a new tool for their studies -- nanoscale pyramid structures with open sides. These new structures allow researchers to capture individual cells for study, while still exploring how those cells interact with their surroundings and with other cells.

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  2. Weird

    Biggest Domino Pyramid Ever … Almost [Video]

    So close, yet so far.

    This would have been the biggest 3D domino pyramid on YouTube and very probably in the world (not a Guinness record though, they don't have such a category yet), with a bottom layer of 27x27 dominoes and 13,482 pieces in total, but there seems to be some kind of Egyptian curse on domino pyramids. I didn't even make a mistake here, it toppled all by itself when it was more than 96% completed, with just 439 dominoes missing :-(
    (via B&P)

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  3. Space

    17 Lost Pyramids Found In Satellite Survey of Egypt

    University of Alabama at Birmingham Egyptologist Dr. Sarah Parcak and her team analyzed images taken from satellites orbiting 700 km above the earth, using infrared imaging to highlight different materials under the surface, and discovered 17 lost pyramids, over 1,000 tombs and over 3,000 ancient settlements. BBC News reports that initial excavations have already confirmed some of the findings.

    How is infrared imaging able to differentiate between the mud bricks ancient Egyptians used to build structures and soil and earth? The mud bricks are more dense than the surrounding soil, and as a commenter on Hacker News points out, the higher density of the bricks means they absorb more light, as well as absorb different regions of light in the spectrum, and is thus detectable due to the light that is reflected back.

    Among the initial excavations, the city streets of the ancient city of Tanis were revealed near the modern-day city of San El Hagar. A 3,000-year-old house has since been excavated, and the outline of the structure almost perfectly matches what the satellite imagery had shown, thus validating the method of exploration and quite probably the rest of Parcak's team's findings. The discovered sites are just the tip of the sandberg, as Parcak theorizes many more sites are buried even deeper, covered by the silt of the River Nile. The satellite method, if put into common use, would allow teams to find better starting points when faced with a large site, and in theory, would make the exploration and excavation processes move more quickly than they have in the past.

    (BBC News via Hacker News)

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