When soaring temperatures, extreme weather and catastrophic wildfires hit the headlines, people start asking for quick fixes to climate change. The U.S. government just announced the first awards from a US$3.5 billion fund for projects that promise to pull carbon dioxide out of the air. Policymakers are also exploring more invasive types of geoengineering − the deliberate, large-scale manipulation of Earth's natural systems.
− the deliberate, large-scale manipulation of Earth's natural systems.
The underlying problem has been known for decades: Fossil-fuel vehicles and power plants, deforestation and unsustainable agricultural practices have been putting more carbon dioxide into the atmosphere than the Earth's systems can naturally remove, and that's heating up the planet. Geoengineering, theoretically, aims to restore that balance, either by removing excess carbon dioxide from the atmosphere or reflectingBut changing Earth's complex and interconnected climate system may have unintended consequences. Changes that help one region could harm another, and the effects may not be clear until it's too late., I believe these consequences are not yet sufficiently understood.
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