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"For a snapshot of what all this points to regarding the total materials footprint of the green energy path, consider the supply chain for an electric car battery. A single battery providing a useful driving range weighs about 1,000 pounds.[15] Providing the refined minerals needed to fabricate a single EV battery requires the mining, moving, and processing of more than 500,000 pounds of materials somewhere on the planet (see sidebar below).[16] That's 20 times more than the 25,000 pounds of petroleum that an internal combustion engine uses over the life of a car."

Article explains that even though 'greener" decisions are being made, the increase in wealth and subsequent demand negates most green efforts just due to volume. For example, we make more fuel efficient cars than we did 20 or 30 years ago, but we are producing 2x as many

To me this is how leadership leads - The current UN plans want at least 10% of fuel used in global aviation to be sustainable by 2030. The head of Rolls Royce, manufacturer of aircraft engines, feels the industry needs to move quicker. He has committed to making sure their Trent engine can run purely on sustainable fuel by 2023. And Shell has committed to increasing their production tenfold by 2025.

Biological, non-toxic and able to create a "healthy" current in the body (think heartbeat.)

An all-electric plane capable of carrying 100 people may be available within six years, significantly accelerating the timeline for the introduction of a non-kerosene powered commercial airliner. U.S. startup Wright Electric Inc. plans to retrofit electric motors into a BAe 146 regional aircraft, replacing its four jet engines and transforming it into a zero-emissions model. The planes will have a range of about one hour or 460 miles. Zero emissions would be a game-changer for the airline industry, and this timing would make the company first to market. The converted planes would be suited to linking close city pairs such as New York and Boston, Rio de Janeiro and Sao Paulo and many European locations currently served by regional jets.

Technologists in the U.S. and China, experts in Japan and researchers within the European Space Agency and the United Kingdom Space Agency are all working to make space-based solar power a reality. Over the past decade, researchers have made impressive advances that increase the likelihood that space solar power (SSP) will be realized during the next decade. "Two of the biggest hurdles to the realization of SSP have always been the cost of launch and the cost of hardware. Add flight rate, and all of a sudden you're looking at numbers always talked about for solar power satellites." The experts believe that solar power satellites at scale could be available within a decade, and envision "a world in the year 2100 where about 20% of electrical power comes from terrestrial nuclear and renewables, with 80% supplied by astroelectricity."

ZeroAvia announced a development collaboration with Alaska Air Group, the parent company of Alaska Airlines, for a hydrogen-electric powertrain capable of flying 76-seat regional aircraft in excess of 500 NM. Alaska is also joining the list of top investors for the company, alongside a fellow Seattle-based Amazon Climate Pledge Fund and Bill Gates's Breakthrough Energy Ventures. Alaska Airlines has also secured options for up to 50 kits to begin converting its regional aircraft to hydrogen-electric power through ZeroAvia's zero-emission powertrain. Zero emission would be a huge step, and nice to see Bezos and Gates both involved.