6/14/2023 0 Comments Bill gates dim the sun"The stratosphere is calm, and things stay up there for a long time," Parson told CNBC. Stratospheric aerosol injection would involve flying aircraft into the stratosphere, or between 10 miles and 30 miles skyward, and spraying a fine mist that would hang in the air, reflecting some of the sun's radiation back into space. But that figure is seen to be remarkably cheap compared to other climate change mitigation initiatives.Ī landmark report released in March 2021 from the National Academies of Sciences, Engineering, and Medicine addressed three kinds of solar geoengineering: stratospheric aerosol injection, marine cloud brightening, and cirrus cloud thinning. Parson, a professor of environmental law at UCLA's law school. The current estimate is that it would cost $10 billion per year to run a program that cools the Earth by 1 degree Celsius, said Edward A. The estimated price tag has gone up since then. A one percent change in the reflectivity of the Earth would cost $500 million per year, which does "not seem excessive," the report said, "considering the extraordinary economic and human importance of climate." The report floated the idea of spreading particles over the ocean at a cost of $100 per square mile. Johnson, entitled "Restoring the Quality of Our Environment," Keith told CNBC. The idea of sunlight reflection first appeared prominently in a 1965 report to President Lyndon B. He points to formal statements of support for researching sunlight reflection from the Environmental Defense Fund, the Union of Concerned Scientists, and the Natural Resources Defense Council, and the creation of a new group he advises called the Climate Overshoot Commission, an international group of scientists and lawmakers that's evaluating climate interventions in preparation for a world that warms beyond what the Paris Climate Accord recommended. Harvard professor David Keith, who first worked on the topic in 1989, said it's being taken much more seriously now. (Sacca has donated money to support research in the area, but said he has "zero financial interests beyond philanthropy" in the idea and does not think there should be private business models in the space, he told CNBC.) "Sunlight reflection has the potential to safeguard the livelihoods of billions of people, and it's a sign of the White House's leadership that they're advancing the research so that any future decisions can be rooted in science not geopolitical brinkmanship," Sacca told CNBC. In Kim Stanley Robinson's science fiction novel, "The Ministry for the Future," a heat wave in India kills 20 million people and out of desperation, India decides to implement its own strategy of limiting the sunlight that gets to Earth.Ĭhris Sacca, the founder of climate tech investment fund Lowercarbon Capital, said it's prudent for the White House to be spearheading the research effort. Getting ready to research a topic is a very preliminary step, but it's notable the White House is formally engaging with what has largely been seen as the stuff of dystopian fantasy. But scientists and climate leaders who are concerned that humanity will overshoot its emissions targets say research is important to figure out how best to balance these risks against a possibly catastrophic rise in the Earth's temperature. Some of the techniques, such as spraying sulfur dioxide into the atmosphere, are known to have harmful effects on the environment and human health. Personal Loans for 670 Credit Score or Lower Personal Loans for 580 Credit Score or Lower Best Debt Consolidation Loans for Bad Credit
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