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Tiny X-ray beam reveals hidden photographs from the 19th century

Tiny X-ray beam reveals hidden photographs from the 19th century

Science
June 22 (UPI) -- Scientists have successfully recovered images from some of the earliest daguerreotypes, the silver plates used for one of the earliest forms of photography. To the naked eye, the portraits of a man and woman are unrecognizable. The daguerreotypes, taken as early as 1850, are too degraded by tarnish and wear. But researchers used rapid-scanning micro-X-ray fluorescence to see past the deterioration and recover the early images. "It's somewhat haunting because they are anonymous and yet it is striking at the same time," Madalena Kozachuk, a PhD student in the chemistry department at the University of Western Ontario, said in a news release. The images were analyzed at the National Gallery of Canada's photography research unit, where the daguerreotypes are stored. "The imag...
Study reveals missing drivers of ocean deoxygenation

Study reveals missing drivers of ocean deoxygenation

Science
June 11 (UPI) -- Over the last 50 years, the amount of oxygen in the world's oceans has declined by 2 percent. Models designed to simulate the phenomenon, however, have failed to reproduce such significant losses. Now, scientists have identified the blind spots in current models, as well as drivers of ocean deoxygenation ignored or underestimated by popular simulations. One of the biggest drivers of ocean deoxygenation is global warming. As increases in the amount of CO2 have encouraged a greenhouse gas effect, heating the atmosphere, the ocean has warmed, too. Warmer water can't absorb as much gas. Rising ocean temperatures can explain approximately 20 percent of the ocean deoxygenation measured over the last half-century, and the current computer models account for this type of oxygen ...
Study reveals key mechanism in formation of spider silk

Study reveals key mechanism in formation of spider silk

Science
May 29 (UPI) -- A team of scientists has discovered a previously unidentified structural component key to the formation of spider silk and its extraordinary strength. Prized for its strength and flexibility, material scientists have long tried to produce synthetic analogs for spider silk. The results of previous efforts, however, have been mixed. Studies have shown the importance of beta sheets, or beta strands, the secondary structure in spider silk proteins, but scientists have struggled to understand how these strength-giving structures form. The transformation from soluble proteins to crystalized silk happens fast, making it difficult to study the proteins' structures. In order to gain new insights into the formation process, scientists at Japan's RIKEN Center for Sustainable Resourc...
Meghan Markle lookalike melts internet with sizzling body reveals

Meghan Markle lookalike melts internet with sizzling body reveals

Entertainment
Instagram MEGHAN MARKLE LOOKALIKE: Hanna Weig's instagram is a hit thanks to her resemblance to the royal The nation united on Saturday, May 19, as former Suits actress Meghan Markle, 36, walked down the aisle to wed Prince Harry, 33.As long-time fans of the starlet will know all too well, the newly-appointed Duchess of Sussex shut down her Instagram page shortly after her royal engagement was announced.But while Meghan may no longer be active on the social media site, her lookalike is very much causing a stir.German-born Instagram sensation Hanna Weig shares a striking resemblance to the former TV actress. Getty SEEING DOUBLE? Hanna has been likened to new roya...
New ESA image reveals massive stellar nursery

New ESA image reveals massive stellar nursery

Science
May 21 (UPI) -- A new image captured by the Herschel Space Observatory and shared by the European Space Agency on Monday showcases a massive stellar nursery located 12,000 light-years away. The G305 complex, which hosts a variety of star-forming hotspots, is located near the Coalsack Nebula. In the night sky, the region is situated within the Southern Cross, or Crux constellation. While G305 is home to many bright, newborn stars, the star-forming region is surrounded by dark clouds of molecular gas and dust. These swirling layers of star-forming materials block out the light of newborn stars, causing the region to appear as a splotch of dark black against the starry backdrop of the Milk Way. As revealed in the new Herschel image, the blue light of the complex's most intense star-forming ...