Mexico bans solar geoengineering experiments after startups field tests

Mexico says it will prohibit experiments with solar geoengineering, a strategy that purports to reverse global warming by reflecting sunlight but is still fraught with concern over other potential consequences that could come with altering Earth’s atmosphere. The move follows controversial attempts by a geoengineering startup to deploy reflective particles into the stratosphere.

The company, called Make Sunsets, conducted the field tests without prior notice or consent from the Mexican government, according to the ban announced late last week by the country’s Secretariat of Environment and Natural Resources. The ban is meant to protect communities and the environment in the absence of any international agreements for how to regulate this...

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