WASHINGTON, D.C. — The U.S. Environmental Protection Agency is launching an investigation into Make Sunsets, a controversial startup that has admitted to injecting sulfur dioxide into the atmosphere as part of a geoengineering initiative. The company claims to sell “cooling credits” to offset the warming effects of climate change, but critics say the practice amounts to unregulated pollution.
The EPA was alerted to the company’s activities and has vowed swift action. “This company is polluting the air we breathe,” an official statement noted. “I’ve instructed my team that we need to quickly get to the bottom of this and take immediate action.”
Sulfur dioxide, the substance released by Make Sunsets, is known to contribute to acid rain and respiratory problems in humans. While some scientists have discussed the potential for such methods to cool the planet, there is currently no regulatory framework for private entities to carry out such atmospheric interventions.
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The startup’s business model, which commodifies these untested interventions through the sale of “cooling credits,” has raised alarm among environmental experts and public officials.
This below is the companies home page. They say on the home page, they “cool earth”

EPA officials, including Principal Deputy Assistant Administrator Abigale Tardif and staff from the Office of Air and Radiation, are coordinating efforts to evaluate whether the company violated federal environmental laws.
Below is a video from their YouTube page.
I reached out to the company and they have not released a statement at this time. If I do get a statement I will update this story.
The investigation comes amid growing concern over the rise of climate tech startups pushing the boundaries of science and regulation without adequate oversight.