Geoengineering Solution to Global Heating: Dimming the Sun - BNN Breaking
Geoengineering Solution to Global Heating: Dimming the Sun
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In a column for WRAL TechWire, North Carolina State University Professor and renowned futurist Marshall Brain explores a radical concept in geoengineering: dimming the sun to counteract global heating. As the Earth wrestles with rapid environmental changes and potential ecosystem collapse, Brain discusses a scenario that seems drawn straight from a disaster movie. The concept involves bouncing back a portion of the sun’s rays, thereby reducing the heat that reaches our planet.
In reflecting the rising concern over climate change, Brain points out that the White House is now formally acknowledging and investigating geoengineering. This term encompasses various strategies like spraying sulfur dioxide into the Earth’s atmosphere, despite known harmful effects. The urgency of countering the catastrophic rise in Earth’s temperature is compelling officials to weigh these risks against potential benefits.
Brain draws on Kim Stanley Robinson’s science fiction novel ‘The Ministry for the Future’ to illustrate a possible future scenario. In Robinson’s narrative, India resorts to blocking sunlight following a devastating heat wave—an act of desperation that might become reality sooner than we think, given our continued reliance on fossil fuels and alarming carbon emissions rate.
Despite the dire need for solutions, Brain underscores that the steps towards implementing the most likely form of geoengineering—stratospheric aerosol injection—are still in their infancy. The White House’s research proposal into this strategy spans five years. Interestingly, the direct costs of this approach are relatively low compared to the financial burden of mitigating climate damage. Yet, as the climate crisis escalates, the need for swift and effective solutions becomes ever more pressing.
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Related Knowledge Center: ENERGY BASICS: nuclear
Nuclear energy provides almost 20 percent of the U.S. electricity supply. Advocates have called for an expanded role for nuclear as an emissions-free fuel source. But the economics of building new reactors are daunting. In addition, lingering safety concerns are an institutionalized part of the calculation of nuclear regulation, and highly radioactive nuclear waste remains a can that public officials have been inclined to kick down the road. The Energy Information Administration projects a sharp decline in nuclear power generation over the next decade, as new nuclear plants — two are planned — are more than offset by anticipated retirements of several operating reactors.