SHEFIK: já se ohradil proti přepočtu na transakci a nbídnul jsem míň manipulativní srovnání - na objem, kterýho prostě experti nejsou schopni, protože už to pro visu nevychází taky dobře. proč by přece článek o ošklivým btc sahal k lepším číslům, když může vytáhnout ty horší. proto si myslí, že rozkaz zněl jasně.
celý odvětví bankovnictví se třesa jako ratlík, protože pochopili, že ztratili monopol na převody peněz a neumí to dohnat. lidi to chtějí.
https://www.bloomberg.com/...2020-12-27/bitcoin-miners-in-nordic-region-get-a-boost-from-cheap-power

a škoda že nikdo nepropírá spotřebu elektřiny fejbůkem, ten je totiž užitečnej

EU by podle europoslanců měla zatížit zvláštním poplatkem část dovozu ze zemí, které si nekladou dostatečně náročné klimatické cíle. EP dnes doporučil, aby se takzvané uhlíkové clo, které má být novým příjmem rozpočtu EU, týkalo především produktů z energeticky náročných odvětví.

Česko má první továrnu na plasty budoucnosti. Staré PET lahve dováží - Seznam Zprávy
https://www.seznamzpravy.cz/...-ma-prvni-tovarnu-na-plasty-budoucnosti-stare-pet-lahve-dovazi-146552

Vyšší cena přestává být pro výrobce překážkou. Částečně i proto, že plasty dostaly v očích spotřebitelů nálepku něčeho špatného. „Je tady naprosto neoprávněná plastofobie ve vztahu k PET. Je to ale fantastický materiál, který dokáže zakonzervovat surovinu v materiálu a dokáže být nekonečně recyklován. Nepotřebujete donekonečna dolovat ze země nerostné suroviny,“ hájí „petky“ Hudeček.

-- -- --
A ja dodam. Ano, jestli 1 plast na potraviny tak PET*. Jestli 2 tak PET a PE.
A to je porad technologie pred aplikaci hydrolyticke depolymerace. Jestlize se projdou ta schvalovaci kolecka a certifikace atd. atd., pak uz ani to znecisteni nebude problem, protoze se ve fazi rafinace nebude pracovat s PETem, ale s destilovatelnymi monomery.
[ PETER_PAN @ ENERGIE - ALTERNATIVNÍ ZDROJE - BUDOUCÍ ZDROJE ENERGIE ]

* PET, pripadne jeho nastupci, jako pisu zde [ PETER_PAN @ Klimaticka zmena // anger is a key adaptive emotional driver of engagement with the climate crisis ]

A first look at US cement manufacturers' road map to carbon neutrality - Electrek
https://electrek.co/.../03/10/a-first-look-at-us-cement-manufacturers-road-map-to-carbon-neutrality/

Electrek spoke with Rick Bohan, VP of sustainability at the Portland Cement Association (PCA). The Portland Cement Association represents 92% of US cement manufacturing production capacity and has distribution facilities in every continental US state. Cement is the second-most-used construction material on the planet.

In November 2020, PCA announced an industry-wide ambition to develop a road map by the end of 2021 to help its member companies achieve carbon neutrality across the concrete value chain by 2050.

...

Increasing access to alternative fuels, especially materials that otherwise end up in landfills, for cement plants to use;

Rapidly driving the adoption of innovative products like Portland limestone cements (PLC), performance-based concrete mixtures, blended cements and more;

Investing in carbon capture, utilization, and storage (CCUS) technology and critical infrastructure to support CCUS, including a robust and smart electric grid.

Defining and validating regenerative farm systems... | F1000Research
https://f1000research.com/articles/10-115/v1

Regenerative outcomes were strongly correlated with our approach to farm scoring. Soil organic matter, fine particulate organic matter, total soil carbon, total soil nitrogen, phosphorous, calcium and sulfur all increased alongside regenerative matrix scores in one or both of the cropping systems. Water infiltration rates were significantly faster in more regenerative almond orchards. Soil bacterial biomass and Haney soil health test scores were higher as cropland incorporated more regenerative practices. Plant species diversity and biomass increased significantly with the number of regenerative practices employed on almonds and rangelands. Invertebrate species diversity and richness were positively associated with regenerative practices in corn, almonds, and rangelands, whereas pest populations and almond yields were unaffected by the number of regenerative practices. Corn yields were negatively associated with more regenerative practices, while almond yields were unaffected by the number of regenerative practices. Profit was significantly higher on more regenerative corn and almond operations.

PER2: znam, koukal sem na to nekolikrat. zdejsi na to ale neslysi, pac maji nakoupino. ale nedavno tu zaznel argument, kolik infrastruktura visy musi zrat energie a ze bitcoin je na tom v objemu obchodovani vyrazne lip... proto clanek, co sem linkoval, nekdo si dal praci to spocitat per transakce...

Greenhouse gas and gold mines Nearly 1 ton of CO2 emitted per ounce of gold produced in 2019 | S&P Global Market Intelligence
https://www.spglobal.com/...old-mines-nearly-1-ton-of-co2-emitted-per-ounce-of-gold-produced-in-2019

Gold mines emitted on average 0.8 tonnes of CO2 equivalent for every ounce of gold that was produced in 2019

1 unce = 1700 usd ~ 0,031 BTC

SHEFIK:
Bitcoin Energy Consumption Index - Digiconomist
https://digiconomist.net/bitcoin-energy-consumption

parada

Bill Gates Sounds Alarm On Bitcoin's Energy Consumption–Here's Why Crypto Is Bad For Climate Change
https://www.forbes.com/...ciano/2021/03/09/bill-gates-bitcoin-crypto-climate-change/?sh=427574206822

"Bitcoin uses more electricity per transaction than any other method known to mankind,” Gates told the New York Times in a recent interview, calling himself a "bitcoin skeptic," and adding that "it’s not a great climate thing.”

To Gates' point, Alex de Vries, a data scientist at the Dutch Central Bank, estimates that each bitcoin transaction requires an average 300 kg of carbon dioxide (CO2)–equivalent to the carbon footprint produced by roughly 750,000 Visa swipes.

https://m.energytrend.com/news/20210310-21153.html

Scholars believe that the coke reductant within the blast furnace can be replaced by hydrogen, which results in the only emission being water throughout the process that will not lead to any pollution. Hydrogen can also provide electricity for electric arc furnaces, which makes it more possible for a relatively cleaner steelmaking industry to happen. How is the feasibility? Mitsubishi Heavy Industries will be establishing steelmaking equipment that replace coal with hydrogen in Europe, and is currently working with major Austrian steel businesses on developing verification equipment, with operation initiating in 2021 at the earliest.

Emerging Swedish business H2 Green Steel (H2GS) will also appropriate US$3 billion for steel refining using the hydrogen produced by the renewable energy equipment in Boden-Luleå, and plans to commence production in 2024. H2GS is expected to produce 5 million tons of steel with zero-carbon emission steel by 2030.

Oil Giants Prepare to Put Carbon Back in the Ground
Climate concerns push BP and other firms to seek new roles as pollution fighters.

https://www.nytimes.com/2021/03/08/business/carbon-capture-bp.html