Stratospheric Aerosol Injection (SAI) is a geoengineering technique that involves releasing tiny reflective particles into the stratosphere to reflect incoming sunlight and cool the planet. For years, it was widely viewed as a radical, last-resort response to climate change.
But this year, Stardust Solutions announced that it has raised $75 million to help make the technology a reality.
This technology raises numerous scientific, ethical, and political questions. But it's now clear that SAI has moved beyond purely theoretical discussions and is increasingly being seen as a serious technological possibility.
www.eenews.net/articles/a-c...A closely guarded plan to cool Earth is revealed
A geoengineering company would use tiny specks of silica to block sun rays — and make billions of dollars.
In the month of May, solar energy power generation overtook coal power generation within the US.
However, after the recent announcement from Trump that he plans to invest hundreds of millions into the coal industry using the Defense Production Act, it remains unclear for how long this lead will last.
www.theguardian.com/us-news/2026...Solar generates more energy in US than coal for first time
Solar supplied 12.8% of US electricity in May even as Trump boosts coal over clean energy
What country would you guess removes the most carbon from the atmosphere?
Brazil or Colombia with their huge rainforests? The US or Iceland with their novel DAC units?
No - the correct answer is... China!
www.carbonbrief.org/qa-the-curre...A group of climate scientists modelling future global warming scenarios recently announced that the worst case scenario for climate change is no longer plausible.
However, the best case scenario is also looking implausible, which demonstrates there is still a lot of progress to be made to ensure we keep global warming well below 2°C.
climate.ec.europa.eu/news-other-r...Five things you should know about climate scenarios
Scientists constantly investigate the state of our planet and our greenhouse gas emissions and policy choices. This allows them to make projections about what our climate will look like in the future,...
Microsoft resumes its carbon removal plans
The carbon removal market can breathe more easily. Microsoft has agreed the offtake of 650,000 metric tons of carbon-removal credits from startup BioCirc.
Considering 90% of the carbon removal market in 2025 came from Microsoft, their pause last month caused more than a couple of sleepless nights for those invested in the carbon removal market.
The end of Microsoft's temporary purchasing pause combined with the steps forward taken by the EU Commission regarding CRCF mean biochar project developers can be cautiously optimistic about the future of the market.
What is CRCF and why is it in the news?
Carbon removals have long been considered a critical part of our global climate mitigation strategy. However, the carbon removal market is fragmented and different project types display different maturities - the nature based solutions market is much more entrenched than the market for engineered solutions.
The EU Carbon Removal Certification Framework (CRCF) provides a standardised methodology for assessing carbon removals, and ensuring quality. This helps provide investors with confidence, and also paves the way for removals certified under the CRCF to be utilised in emission trading schemes such as the EU ETS.
Microsoft's carbon removal pause is a shock. It is not a death sentence. The news that Microsoft had quietly told suppliers it was slowing carbon removal purchases sent a predictable tremor through the industry. But anyone paying attention always knew this moment could come. Microsoft represented roughly 90% of the entire carbon removal market in 2025. In any market, that dependence would be scary.
Had this happened five years ago, it might have had a bigger impact; The infrastructure barely existed, and the buyer pool was no where near what it is today.
That is no longer true. The Frontier coalition, government purchasing programmes and a growing field of corporate climate commitments mean the foundations now exist for others to step in. Removing Microsoft from the data still leaves a market growing year over year, with new buyers stepping in every day. The market Microsoft helped build is bigger than Microsoft.
