Graciela Chichilnisky Quotes About Earth
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Geoengineering means changing the Earth's fundamental large-scale processes.
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We need a transformation of the world economy and of how we use and share the Earth's resources. We are running out of time. We are truly at the point of no return.
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To survive, humans need food, water, and air. Yet biodiversity, the Earth's bodies of water, and the planet's atmosphere are all under threat.
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We are still learning how exactly the Earth reacts to increased CO2 and other greenhouse gases. We know it leads to warming seas which are melting the North and the South Poles, rising and starting to swallow entire coastal areas in the US and elsewhere, as the New York Times article documents.
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The sun is the source of all energy on planet Earth and we cannot experiment with our only energy source.
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We have to remove the CO2 that the industrial economy has already emitted, which otherwise will remain in the atmosphere for hundreds of years and alter the Earth's climate irreversibly. It is possible to do this.
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We know little of the consequences of the geoengineering process, such as spraying particles into the atmosphere that shade the planet from the sun's rays and could decrease its temperature. But this process is how dinosaurs disappeared from the Earth about 60 million years ago, by particles spewed by a volcano or a giant meteorite impact, and our species could follow suit.
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Kenneth Arrow Economist