Environmental News

Discussion in 'Environmental Discussion' started by tochatihu, Oct 22, 2015.

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  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Soccer game penalty?

    Bob Wilson
     
    #2861 bwilson4web, Oct 6, 2025
  2. jdenenberg

    jdenenberg EE Professor

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    A "Yellow Card" in soccer is declared by the referee when there is a dangerous action by a player. Two yellow cards equals a "Red Card" and the player is rejected from the game (with no replacement). @tochatihu is saying that the commentor is making a serious error in judgement.

    JeffD
     
    #2862 jdenenberg, Oct 6, 2025
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  3. tochatihu

    tochatihu Senior Member

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    I need a pastel yellow card option for not-so-serious situations.
     
    #2863 tochatihu, Oct 6, 2025
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  4. tochatihu

    tochatihu Senior Member

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    "The offer from the Navajo Transitional Energy Co. (NTEC) equates to one-tenth of a penny per ton ..."

    "At the last successful government lease sale in the region, a subsidiary of Peabody Energy paid $793 million, or $1.10 per ton ..."

    Quoting from:
    Biggest US coal sale in a decade sees Navajo company offer | AP News

    That previous lease sale was in 2012, representing 3 orders of magnitude reduction in price. One could scarcely disagree with calling coal cheap. If one can ignore externalities.
     
    #2864 tochatihu, Oct 6, 2025
  5. bisco

    bisco cookie crumbler

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    the king is dead, long live the king!
     
    #2865 bisco, Oct 6, 2025
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  6. Merkey

    Merkey Active Member

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    As my time on this earth is limited, I decided to just list Hillary. Mea culpa, mea culpa, mea maxima culpa.
     
    #2866 Merkey, Oct 7, 2025
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  7. Stevewoods

    Stevewoods Senior Member

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    sorry, changed my mind.
     
    #2867 Stevewoods, Oct 7, 2025
  8. fuzzy1

    fuzzy1 Senior Member

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    I hope everyone now understands that these were just low (comparatively) elevation hikers and trekkers, not climbers trying to reach the summit. The first TV item I saw also gave the false impression that these were summit climbers, but an immediate search for more news found otherwise.

    By 'low elevation', I mean 16,000 feet. The normal Nepal Base Camp for climbers, on the other side of the mountain, is around 18,000 feet.

    As for the peak baggers, this is the first graphic I found to show the growth:
    everest summits.jpg
     
    #2868 fuzzy1, Oct 9, 2025 at 4:38 PM
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  9. ColoradoBoo

    ColoradoBoo Senior Member

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    Gosh the two base camps are at around 17,000 feet....that's scary.

    Our USAF Academy football stadium is at 6,621 feet and almost every year we see visiting players from low-level states (Hawaii, San Diego) passed out from lack of oxygen.

    When I flew up in Alaska, Mt McKinley always had its own weather system....loved flying up there.
     
    #2869 ColoradoBoo, Oct 9, 2025 at 4:46 PM
  10. fuzzy1

    fuzzy1 Senior Member

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    What size does their tracking reach down too? Even millimeter-size objects are very destructive. I'm remembering a long-ago photo of a deep pit on a Space Shuttle front window, which post-flight analysis determined to be from the impact of a paint flake.


    ESA - Space debris by the numbers

    Information last updated on 08 September 2025
    Number of rocket launches since the start of the space age in 1957
    About 7010 (excluding failures)
    Number of satellites these rocket launches have placed into Earth orbit
    About 23030
    Number of these still in space
    About 15280
    Number of these still functioning
    About 12500
    Number of space objects regularly tracked by Space Surveillance Networks and maintained in their catalogue
    About 42930
    Estimated number of break-ups, explosions, collisions, or anomalous events resulting in fragmentation
    More than 650
    Total mass of all space objects in Earth orbit
    More than 14700 tonnes
    Not all objects are tracked and catalogued. The number of objects estimated based on statistical models to be in orbit (MASTER-8, reference population 08/2024)
    54000 space objects greater than 10 cm (including approx. 9300 active payloads)
    1.2 million space debris objects from greater than 1 cm to 10 cm
    140 million space debris objects from greater than 1 mm to 1 cm
     
    #2870 fuzzy1, Oct 9, 2025 at 5:11 PM
  11. tochatihu

    tochatihu Senior Member

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    @fuzzy1 describes Everest climbers accurately, I think. North-side holiday goers relatively well prepared for about 5 km conditions planning for weather hole for photo ops with 9 km summit behind. A large number of them and weather went 'the other way' and assistance was required for rescue. All now down it seems.

    ==
    I live at 2000 meters and ... manage. Trip last year was to 3000 meters where Kunming people were OK but sea-level people were on their (little 7 dollar) oxygen bottles.
     
    #2871 tochatihu, Oct 10, 2025 at 2:18 AM
  12. tochatihu

    tochatihu Senior Member

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    If anyone is tracking <1 cm orbital debris niw, they are doing so quietly. Estimated 140 million space debris objects from greater than 1 mm to 1 cm seems about right. Only large among those seem likely to make important holes.
     
    #2872 tochatihu, Oct 10, 2025 at 2:32 AM
  13. tochatihu

    tochatihu Senior Member

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    #2873 tochatihu, Oct 11, 2025 at 7:54 PM
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