The Mexican government said it will develop a strategy to ban future experimentation with solar geoengineering, which will also include an information campaign and scientific reports. However, the government did not announce more specific actions. “Mexico reiterates its unavoidable commitment to the protection and well-being of the population from practices that generate risks to human and environmental security,” said the government in a statement. Geoengineering refers to the act of deliberately changing the Earth’s systems to control its climate. One theoretical proposal has been to spray sulphur particles to cool the planet —which has been documented to briefly happen after volcanic eruptions. A recent United Nations report found that this practice, known as stratospheric aerosol injection (SAI), “has the potential to reduce global mean temperatures”.
It was February in northern Sweden and the sun was returning after a dark winter. In the coming months the tundra would reawaken with lichens and shrubs for reindeer to forage in the permafrost encrusted Scandinavian mountain range. But the changing season also brought some unwelcome news to the Indigenous Sámi people, who live across northern Scandinavia, Finland and eastern Russia. The members of the Saami Council were informed that researchers at Harvard planned to test a developing technology for climate mitigation, known as solar geoengineering, in Sápmi, their homeland. “When we learned what the idea of solar geoengineering is, we reacted quite instinctively,” said Åsa Larsson Blind, the Saami Council vice president, at a virtual panel about the risks of solar geoengineering, organized by the Center for International Environmental Law and other groups.