Summary

A start-up called Make Sunsets has developed a method for geoengineering by releasing weather balloons filled with sulfur dioxide particles to reflect sunlight and cool the planet. The company is selling 'cooling credits' based on the estimated amount of warming negated by each balloon release. While the science behind sulfur dioxide and solar reflectivity is sound, there are concerns about potential negative effects such as seed rainstorms in one region while depriving other areas of rain.

Key Points

• Make Sunsets has raised $750,000 from investors including Boost VC, Draper Associates, and Pioneer Fund.

• The company's method is based on the science behind sulfur dioxide and solar reflectivity, which was accidentally proven by humans when they slashed the sulfur content of marine shipping fuels in 2020.

• The EPA is investigating Make Sunsets' approach to geoengineering due to concerns about the potential effects on air quality and climate.

Why It Matters

This start-up's approach to geoengineering highlights the need for innovative solutions to address climate change, but also raises important questions about the potential risks and unintended consequences.

Author

Tim De Chant