Climate Change

ChatGPT & DALL-E generated panoramic image that visualizes the concept of Energy Returned on Energy Invested (EROEI) through the metaphor of a balance scale

Energy Return On Investment Rears Its Misshapen Head Again

Over the past year or so, energy return on energy invested (EROEI) has shown up multiple times for me as an attack on technologies that are now superior. A nuclear shipping advocate tried to gotcha me with that for biofuels for shipping. Others reasonably asked about it for biofuels in … [continued]

ChatGPT & DALL-E generated panoramic image showcasing a magnesite crystal absorbing CO2 molecules

CCS Redux: No, Magnesite Isn’t The Magic CO2 Sequestration Solution Either

Carbon capture and sequestration in all of its various ineffective, inefficient and expensive forms is having another run up the hype cycle. Nothing has really changed. The problems still exist. The alternatives are still better. The potential for use is still minuscule. And so, the CCS Redux series, republishing old … [continued]

"abandoned boat on the old harbor, the water level has dropped a lot over the years #saltonsea #birthdaytrip" by danboarder is licensed under CC BY 2.0.

No Longer Can We Think Of Groundwater As An Endless Resource

Barcelona entered an emergency situation this week following 3 years of drought. Tight water restrictions will be implemented after water levels at reservoirs in the Mediterranean region fell below 16% of full capacity. The water use restrictions will affect nearly 6 million people. Meanwhile, Spain’s outdoor cafes were brimming with … [continued]

ChatGPT & DALLE generated panoramic, cutaway image that illustrates a stalk of corn acting as a natural conveyor belt for carbon

CCS Redux: Soil Carbon Capture — Great Loamy Hope Or Bandaid?

Carbon capture and sequestration in all of its various ineffective, inefficient and expensive forms is having another run up the hype cycle. Nothing has really changed. The problems still exist. The alternatives are still better. The potential for use is still minuscule. And so, the CCS Redux series, republishing old … [continued]

ChatGPT & DALL-e generated panoramic image depicting a dusty and abandoned hydrogen electrolysis facility in a desert

Fortescue & Nikola Insane Green Hydrogen For Trucking Play In Waterless Arizona Desert

Green hydrogen is absolutely essential for decarbonizing the massive global warming problem that is current hydrogen use. Our current 120 million tons is a global warming problem on the scale of all of aviation. You would think that fixing that would be the highest priority, and that deeply irrational alternatives … [continued]

ChatGPT & DALL-E generated panoramic image visually captures the metaphor of the excessive cost of carbon capture and storage as a Sisyphean task.

CCS Redux: Carbon Capture Is Expensive Because Physics

Carbon capture and sequestration in all of its various ineffective, inefficient and expensive forms is having another run up the hype cycle. Nothing has really changed. The problems still exist. The alternatives are still better. The potential for use is still minuscule. And so, the CCS Redux series, republishing old … [continued]

ChatGPT & DALL-E generated panoramic image of a hydrogen refueling station that is out of service and being worked on.

California’s Hydrogen Stations Being Fixed More Hours Than Pumping At 30% Capex Per Year

Recently I’ve been reviewing studies related to hydrogen trucking, as it’s one of the few places where serious transportation research organizations still hold out hope for the energy carrier. I’ve looked at studies from multiple countries in Europe and North America back as far as 2010 now. Most recently I’ve … [continued]

ChatGPT & DALL-E generated panoramic image of a hydrogen fuel cell semi-truck tractor in a repair shop

Hydrogen Fleets Are Much More Expensive To Maintain Than Battery & Even Diesel

One of the interesting things I’ve been doing is participating in a review group for a European study on heavy vehicle decarbonization comparisons and simulations. That means, among other things, that I’m poking at the assumptions being used. As the paper is in review and assumptions are being tested and … [continued]

"Agriculture technology device, farming operation" by U.S. Department of Agriculture is marked with CC0 1.0.

More Internet Access From You-Know-Who Can Enhance Sustainable Agritech

The image of the small town farmer patiently plowing their fields is a contemporary myth. Today’s farming is all about agritech. Labor costs too high? Buy driverless tractors. Can’t be profitable if seed rows are laid out sporadically? Automated seed planters will take care of that. Want to limit the … [continued]