Solar geoengineering, a concept aimed at mitigating climate change by reflecting sunlight back into space, is gaining traction as startups like Stardust Solutions secure significant funding. Recently, Stardust Solutions completed a $60 million funding round, marking a milestone for the geoengineering sector. This surge in interest raises critical questions among researchers regarding the implications of private sector involvement in climate intervention technologies.
For decades, scientists have explored geoengineering as a means to combat global warming, drawing inspiration from natural phenomena such as volcanic eruptions that release sulfur dioxide, which can temporarily cool the planet. However, the approach remains highly controversial, with experts cautioning against potential unforeseen consequences and disparities in its benefits. Notably, established research initiatives, including a Harvard program, have faced significant hurdles, leading to cancellations after prolonged debates.
The emergence of private companies in the geoengineering landscape adds complexity to the discourse. In a notable incident, the California-based startup Make Sunsets attempted to release particles into the atmosphere, which sparked widespread backlash and prompted regulatory responses from countries like Mexico. In contrast, Stardust Solutions is adopting a more cautious approach, asserting that it will only proceed with government authorization and established regulatory frameworks. Nevertheless, the company’s reluctance to disclose details about its particle technology raises concerns regarding transparency and trust in this burgeoning field. As experts like David Keith and Daniele Visioni emphasize, any research must be transparent to be credible, highlighting the delicate balance between innovation and accountability in geoengineering.
Source: Solar geoengineering startups are getting serious via MIT Technology Review