Coasts drown as coral reefs collapse under warming and acidification — ScienceDaily

A new study shows the coastal protection coral reefs currently provide will start eroding by the end of the century, as the world continues to warm and the oceans acidify.

A team of researchers led by Associate Professor Sophie Dove from the ARC Centre of Excellence for Coral Reef Studies at The University of Queensland (Coral CoE at UQ) investigated the ability of coral reef ecosystems to retain deposits of calcium carbonate under current projections of warming and ocean acidification.

Calcium carbonate is what skeletons are made of — and it dissolves under hot, acidic conditions. Marine animals that need calcium carbonate for their skeletons or shells are called ‘calcifiers’. Hard corals have skeletons, which is what gives reefs much of their three-dimensional (3D) structure. It’s this structure that helps protect coasts — and those living on the coasts — from the brunt of waves, floods and storms. Without coral

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Drone Footage Shows Collapse of Observatory

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RICARDO ARDUENGOGetty Images

  • The famed Arecibo Observatory, featured in the films Contact and Goldeneye, gave way earlier this week after its support cables snapped.
  • The National Science Foundation, which ran the Puerto Rico-based radio observatory, released dramatic drone footage of the collapse.
  • The telescope operated for almost 60 years, scanning the skies for asteroids and alien signals and contributing to our understanding of the universe.

    The National Science Foundation (NSF) has released tragic drone footage of the collapse of the famed Arecibo Observatory, which fell this week after 57 years of service.

    📡You love badass space stuff. So do we. Let’s explore the universe together.

    The observatory—made famous by films like Contact and the James Bond flick Goldeneye—probed the distant reaches of the universe for signs of extraterrestrial life, scanned the skies for fast radio bursts, and tracked marauding asteroids zipping through our solar system. It’s

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    Terrifying footage shows collapse of Arecibo Observatory’s massive radio telescope

    It took 17 seconds for Arecibo Observatory’s massive radio telescope to crumble. It will take much longer for the dust to settle.

    The iconic structure in Puerto Rico collapsed on Dec. 1 after cable failures in August and November made the telescope too delicate to safely repair. The U.S. National Science Foundation (NSF), which owns the site, knew that the structure could fall any time and was evaluating how to go about decommissioning the telescope. Now, the agency has shifted to evaluating what to do with its wreckage.

    “We’re in the assessment phase,” Ralph Gaume, director of NSF’s Division of Astronomical Sciences, said during a news conference held today (Dec. 3).

    Related: Losing Arecibo Observatory creates a hole that can’t be filled

    He said that the University of Central Florida, which operates the site for the NSF, has hired a clean-up contractor who arrived at the telescope yesterday. “They’re

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    See unreal drone footage of Arecibo Observatory’s catastrophic collapse

    Remarkable video footage of the Arecibo Observatory’s 900-ton platform falling into the 1,000-foot wide dish below was released Thursday by the National Science Foundation. A drone happened to be performing an up-close investigation of the cables that still held the platform above the dish as the cables snapped Tuesday.

    The video of the massive radio telescope shows both the drone footage and the view from a camera in the visitor center that shows the platform falling into the dish just above the jungle floor in Arecibo, Puerto Rico. Two massive chunks of the cement towers that the cables were attached to can also be seen falling.

    Two of the cables had previously broken, one in August and another in November, destabilizing the telescope.

    A drone was inspecting the site atop one of the towers, where

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    Puerto Rican scientists, shattered by collapse of Arecibo Observatory, push to rebuild

    Génesis Ferrer had dreamed of working in the Arecibo Observatory ever since she first met some of its astrophysicists during a high school trip in Puerto Rico.

    After hearing them use terms such as “radiation” and “emission,” Ferrer, 21, said she “just fell in love with the entire idea of being able to understand things so far away.” Like many scientists in the U.S. territory, Ferrer can trace back her interest in astrophysics, biophysics and space to that school trip.

    The fourth-year physics student from the University of Puerto Rico, Río Piedras campus, had recently earned a fellowship from the Puerto Rico NASA Space Consortium to study emissions from red dwarf stars using the giant radio telescope in Arecibo. Because of coronavirus restrictions, Ferrer has been accessing the data she needs from the Arecibo Observatory remotely, hoping she would soon be able to finish her investigation in the place where

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    Iconic radio telescope suffers catastrophic collapse

    The Arecibo Observatory’s suspended equipment platform collapsed just before 8 a.m. local time on December 1, falling more than 450 feet and crashing through the telescope’s massive radio dish—a catastrophic ending that scientists and engineers feared was imminent after multiple cables supporting the platform unexpectedly broke in recent months. No one was hurt when the 900-ton platform lost its battle with gravity, according to staff at the observatory in Puerto Rico.



    a tree in the middle of a dirt field: This aerial view shows the damage to the Arecibo Observatory after its 900-ton equipment platform broke loose, swung into a nearby rock face, and smashed onto the radio dish below.


    © Photograph by Ricardo Arduengo, Getty Images

    This aerial view shows the damage to the Arecibo Observatory after its 900-ton equipment platform broke loose, swung into a nearby rock face, and smashed onto the radio dish below.


    The telescope itself has been destroyed, although the full extent of the damage to surrounding facilities hasn’t yet been determined. Aerial photos show that the platform likely made a pendulous swing into a nearby rock face. Parts of it, including a large

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    Arecibo telescope faces a catastrophic collapse, must be deconstructed

    One of the most iconic astronomical observatories has fallen apart beyond repair. Now it threatens to collapse entirely.

    Following two unexpected cable breaks, engineers have determined that the Arecibo Observatory’s 1,000-foot (305-meter) radio telescope is so structurally unsound that any workers who try to fix it would be risking their lives. So the National Science Foundation, which owns the Puerto Rico telescope, has decided to decommission it.

    Now engineers are racing to figure out how to safely deconstruct one of the largest radio telescopes before it collapses on itself. The structure is so unstable that engineers can’t even approach it to evaluate the risk and timing of such a collapse.

    “Even attempts at stabilization or testing the cables could result in accelerating the catastrophic failure,” Ralph Gaume, the director of the NSF’s Division of Astronomical Sciences, said in a press conference Thursday morning.

    ‘It’s like losing someone important in your

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    Iconic SETI Dish Will Be Demolished Due to Risk of ‘Catastrophic’ Collapse

    Arecibo Observatory in spring 2019, before the cable failures.

    Arecibo Observatory in spring 2019, before the cable failures.
    Photo: UCF Today

    The recent failure of two support cables at the Arecibo Observatory in Puerto Rico has destabilized the structure such that it cannot be repaired without placing construction workers at significant risk, according to officials with the National Science Foundation. As feared, the beloved 1,000-foot telescope will have to be decommissioned.

    As if 2020 couldn’t get any worse, we received news this morning that the giant dish at Arecibo will have to be demolished. The National Science Foundation came to this hard decision following a review of engineering assessments, which concluded that the observatory is in seriously bad shape and that it cannot be stabilized without placing workers in danger. The NSF is now planning for the controlled decommission of the dish, ending a historic 57-year run.

    “I want to say this as forcefully as possible,” said Ralph

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    Iconic Arecibo Observatory may be on the brink of collapse after cable failures

    No one was expecting the snap on Nov. 6 as engineers at the Arecibo Observatory in Puerto Rico weighed their options for dealing with damage to the facility from a cable failure over the summer.

    But just as engineers were ready to begin repairs on that secondary cable, which slipped out of its socket in August, they faced a much more serious challenge: one of the main cables unexpectedly snapped, putting the entire facility at risk.

    “We have seen some individual wire breaks on that particular cable, but we hadn’t seen any change for weeks,” Francisco Cordova, the director of the observatory, told Space.com.

    Related: The Arecibo Observatory: Puerto Rico’s giant radio telescope in photos

    “That particular situation was evaluated by the engineering team and determined not to be an issue because the capacity of that cable was so much higher than the load that it was taking, that it

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