LONDON — The British government said it opposes attempts to cool the planet by spraying millions of tons of dust into the atmosphere — but did not close the door to a debate on regulating the technology. 

The comments in parliament Thursday came after a POLITICO investigation revealed an Israeli-U.S. company Stardust Solutions aimed to be capable of deploying solar radiation modification, as the technology is called, inside this decade.

“We’re not in favor of solar radiation modification given the uncertainty around the potential risks it poses to the climate and environment,” Leader of the House of Commons Alan Campbell said on behalf of the government.

Stardust has recently raised $60 million in finance from venture capital investors, mostly based in Silicon Valley and Britain. It is the largest ever investment in the field. 

The emergence of a well-funded, private sector actor moving aggressively toward planet cooling capability has led to calls for the global community to regulate the field. 

Citing POLITICO’s reporting, Labour MP Sarah Coombes asked the government: “Given the potential risks of this technology, could we have a debate on how Britain will work with other countries to regulate experiments with the earth’s atmosphere, and ensure we cooperate with other countries on solutions that actually tackle the root cause of climate change?”

Campbell signaled the government was open to further discussion of the issue by inviting Coombes to raise the point the next time Technology Secretary Liz Kendall took questions in parliament. 

Stardust’s CEO Yanai Yedvab told POLITICO the company was also in favor of regulation to ensure the technology was deployed safely and after proper public debate. Some scientists and experts, though, have raised concerns about the level of secrecy under which the company has conducted its research. 

Stardust is proposing to use high-flying aircraft to dump millions of tons of a proprietary particle into the stratosphere, around 12 miles above the Earth’s surface. The technology mimics the short term global cooling that occurs when volcanoes blow dust and gas high into the sky, blocking a small amount of the sun’s heat. 

Most scientists agree this could temporarily lower the Earth’s surface temperature, helping to avert some impacts of global warming. The side effects, however, are not well researched. 

The U.K. has one of the world’s best funded research programs looking at the impacts of its potential use, via its Advanced Research and Invention Agency. 

“We do work closely with the international research community to evaluate the latest scientific evidence,” said Campbell.  

POLITICO has meanwhile been blocked from receiving internal government advice on solar radiation modification.

The Department for Energy Security and Net Zero has refused to release the documents, arguing this would have a “chilling effect” on the candor of advice by officials to ministers. 

In a response to a records request, DESNZ Director of International Climate Matt Toombs said: “Our priority is to reduce greenhouse gas emissions from human activities and to adapt to the unavoidable impacts of climate change. Any research into cooling technologies in no way alleviates the urgent need for increased decarbonization efforts.”