Consider the following statements:

Geoengineering is the technique to remove carbon dioxide from the air.

Geoengineering is the technique to limit the amount of sunlight reaching the planet’s surface.

Which of the statements given above is/are correct?

Question

Geoengineering is the technique designed to tackle the effects of climate change directly, usually by removing carbon dioxide (CO₂) from the air or limiting the amount of sunlight reaching the planet\'s surface.
It involves deliberate planet-scale interventions to counteract global warming.
Methods to remove CO₂from the air: Increasing the capacity of trees and plants to absorb CO₂ from the air, burning large quantities of wood in power plants with carbon-capture technology, making and burying large amounts of charcoal to lock carbon into the soils, grazing cattle in a way designed to turn grasslands into giant carbon sinks, fertilising the oceans with iron to encourage the growth of algae that can soak up atmospheric carbon dioxide, etc.
Methods to limit amount of sunlight: Placing mirrors in space that reflect sunlight away from the Earth, firing sulphate aerosols into the stratosphere, using unmanned ships to increase above-ocean cloud cover by spraying sea water into the air, etc.

GKToday Admin · Accepted Answer

Both 1 & 2

Geoengineering is the technique designed to tackle the effects of climate change directly, usually by removing carbon dioxide (CO₂) from the air or limiting the amount of sunlight reaching the planet\'s surface.
It involves deliberate planet-scale interventions to counteract global warming.
Methods to remove CO₂from the air: Increasing the capacity of trees and plants to absorb CO₂ from the air, burning large quantities of wood in power plants with carbon-capture technology, making and burying large amounts of charcoal to lock carbon into the soils, grazing cattle in a way designed to turn grasslands into giant carbon sinks, fertilising the oceans with iron to encourage the growth of algae that can soak up atmospheric carbon dioxide, etc.
Methods to limit amount of sunlight: Placing mirrors in space that reflect sunlight away from the Earth, firing sulphate aerosols into the stratosphere, using unmanned ships to increase above-ocean cloud cover by spraying sea water into the air, etc.

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