​Spraying Diamond Dust to Cool Earth

A modelling study published in October 2024 suggests that spraying millions of tonnes of diamond dust into the Earth’s upper atmosphere each year could potentially cool the planet by approximately 1.6 degrees Celsius, highlighting an innovative yet controversial approach to combating global warming.

Key Points

  • Previous Research: This method falls under geoengineering, specifically Solar Radiation Management (SRM), which aims to reflect solar radiation away from Earth. Other materials like sulfur and calcium have been considered in past studies.
  • Global Warming Context: Current efforts to mitigate climate change have been inadequate, with global temperatures approximately 1.2 degrees Celsius higher than pre-industrial times. ....

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