Solar geoengineering: Scientists decry a 'foolish' idea
Douglas Fischer for the Environmental Health News
But the idea is gaining steam among some political leaders and
scientists as global efforts to reduce greenhouse gas emissions fail and the
effects of climate change are increasingly felt around the world.
A group of scientists, social justice advocates, Indigenous
leaders, and youth on Wednesday decried the concept, saying the technology
would widen disparities between global haves and have-nots, leave humanity
exposed to even greater problems in the future, and tinker with a complex,
essential system – our atmosphere – without fully understanding the
consequences.
And it doesn't solve the underlying problem: Increasing carbon
dioxide emissions that linger in the atmosphere for thousands of years, acting
like a thick down comforter for the planet.
Climate change commitment
"We know from medicine that if you ignore the root cause and treat the symptom, the consequences are often fatal," said Raymond Pierrehumbert, Halley Professor of Physics at the University of Oxford.
"It's an outrageous commitment to lay at the feet of future generations: To say we are going to continue to burn fossil fuels so we can get richer, and we'll do that at the cost of forcing the next thousand generations of humanity to continue this without fail."
Michael Mann, Distinguished Professor of Atmospheric Science at Penn State, called the idea "climate methadone."
"It's an addiction ... We become dependent on that
technology, because we haven't worked hard enough to kick the addiction"
to fossil fuels, he said. "When you remove the technology, the results are
disastrous."
Geoengineering and climate injustice
Geoengineering is
the deliberate, large-scale intervention of major Earth systems to blunt
climate change's impact: adding sulfate particles to the atmosphere to reflect
sunlight, or seeding the ocean with iron particles to promote algae growth that
sucks carbon dioxide from the atmosphere.
It has made headlines as climate impacts have picked up: House
Democrats included a geoengineering provision in their
climate plan. The U.S. National Academies of Sciences
recommended spending $100 million to $200 million over five
years to expand understanding of solar geoengineering. This spring, Sweden nixed an experiment,
scheduled for this month, to test technology that could dim the sun.
Proponents argue that the scale of climate change is such that all
solutions need to be on the table.
Wednesday's webinar was organized by the Center for International
Environmental Law, the Heinrich Böll Foundation, the Indigenous Environmental
Network and several other climate and social justice groups. Participants
countered that geoengineering research closes the door to true climate
solutions and enables polluters – and rich countries – to continue using fossil
fuels.
"It's a dangerous distraction for the struggles ahead,"
said Jennie Stephens, Dean's Professor of Sustainability Science and Policy at
Northeastern University. "It undermines and slows the transition away from
fossil fuels to renewables."
Climate solutions
Any focus on such a "narrow technological intervention" like geoengineering, Stephens added, reinforces climate injustices – and fails to invest in the people, community, housing and transportation solutions necessary to bring both social and economic justice in addition to a climate solution.
"It takes solutions off the table," she said.
Added Mann: "It is about the politics at this point. We have
the technology to solve the crisis. What we need is the political will. The
very idea that we could deploy this idea in the future is being used as a
crutch to take the pressure off polluters."