18 Matching Annotations
  1. Mar 2023
    1. 10.1038/s41558-022-01576-2

      Der Aufsatz und die ihm zugrundeliegende Publikation kritisieren, dass die 1,5°-pathways des IPCC den Kohleausstieg vor dem Öl- und Gassausstieg fordern. Damit tragen die ärmeren Länder die Hauptlast. Gerechter und besser umzusetzen wäre ein schnellerer Ausstieg aus Öl und Gas, der vom globalen Norden eine schnellere Transformation verlangen würde.

  2. Feb 2023
  3. Jan 2023
    1. Sustainability researchers from the Rochester Institute of Technology point out that there is significant variation in the types and amounts of critical materials present in different reservoirs of coal waste. This means that not all waste will be profitable to purify. As the researchers have written, “The value of rare earths in a single ton of coal ash can vary from US$99 at a coal plant in Ohio to $534 at a West Virginia plant. With extraction costs expected to range between $380 and $1,200 per ton, not every coal plant’s ash will be a profitable place to find rare earths.” There are also concerns that the chemicals used to harvest critical minerals could be damaging.

      In the best case, the cost of extraction is about 70% of the possible value of the recovered minerals.

  4. Dec 2022
    1. One of the things that actually is something that needs unpacking and hasn't been done yet is the role of coal. When we manufacture a solar panel, to get a solar cell, you've got to heat that silicon up to 2,200 degrees Celsius. 01:20:17 At the moment we use coke and coal. Now if we take away coke and coal, how do we do that? And there are options, but they're things like using biofuel, or hydrogen, or electric arc. And so scaling that problem up basically means it's not going to work. So when we lose coal, we lose manufacture. So what we could talk about next for example, is the true role of what the three fossil 01:20:43 fuels actually do for us. Oil, gas, and coal. Nate Hagens: Yeah, I think that's a good conversation. I just last week talked to Art Berman about what the products are in a barrel of oil. And the light things that our chemical inputs like butane and ethylene come off first, then gasoline, then diesel, then the asphalt and things. So if for some reason we don't need gasoline anymore, we still have to burn off the gasoline 01:21:13 to get to the heavy things that we absolutely do need, like the 10 trillion worth of diesel machinery in the world. So oil is going to be with us. Probably in smaller amounts, well definitely in smaller amounts. But we can't live without it at the present. So to have that broader conversation with you on the three main fossil fuels, that would 01:21:36 be a good conversation. Simon Michaux: What do they really do for us? Nate Hagens: Yeah, what do they really do for us? What do we really need? And what do we not need?

      !- Futures Thinking: The value of Coal, Oil and Gas in our current industrial society - If we do away with coal, we cannot manufacture - How do we find a solution to this? - Efficacy - can we get rid of / redesign infrastructure so that we can eliminate unnecessary use of coal / oil / gas? - ie. relocalize to eliminate need for energy intensive transportation, locally produced bio-fertiilzed food production to get rid of fossil fuel fertilizers, replace 24/7 refrigerators in every home with fruit and veg underground cold cellars and only very small fridge or freezer with ultra insulation for very low energy consumption

  5. Aug 2022
  6. Sep 2021
  7. Jul 2020
  8. May 2020
  9. May 2017
  10. Mar 2017
  11. Jan 2017
  12. Dec 2016
    1. When you actually do the math, coal kills somewhere on the order of 4,000 times more people per unit of energy produced than nuclear power.