Sweet marine particles resist hungry bacteria

A major pathway for carbon sequestration in the ocean is the growth, aggregation and sinking of phytoplankton—unicellular microalgae like diatoms. Just like plants on land, phytoplankton sequester carbon from atmospheric ...

Arctic shrubs add new piece to ecological puzzle

A 15-year experiment on Arctic shrubs in Greenland lends new understanding to an enduring ecological puzzle: How do species with similar needs and life histories occur together at large scales while excluding each other at ...

A diversified field produces a higher yield

Farmers can earn more by developing their fields to be more diversified as the fertility of soil improves. At the same time, carbon can also be sequestered.

The world's first carbon dioxide removal law database

Today, researchers at Columbia University launched the world's first database of carbon dioxide removal laws. The database, which is publicly available at cdrlaw.org, provides an annotated bibliography of legal materials ...

Intensive monoculture is putting water systems in peril

The global spread of vast forest plantations and agricultural monocultures are turning once diverse landscapes into areas of land supporting single plant species, with profound implications for our terrestrial water cycle, ...

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Carbon sequestration

Carbon sequestration is a geoengineering technique for the long-term storage of carbon dioxide or other forms of carbon, for the mitigation of global warming. Carbon dioxide is usually captured from the atmosphere through biological, chemical or physical processes. It has been proposed as a way to mitigate the accumulation of greenhouse gases in the atmosphere released by the burning of fossil fuels.

CO2 may be captured as a pure by-product in processes related to petroleum refining or from flue gases from power generation. CO2 sequestration can then be seen as being synonymous with the storage part of carbon capture and storage which refers to the large-scale, permanent artificial capture and sequestration of industrially-produced CO2 using subsurface saline aquifers, reservoirs, ocean water, aging oil fields, or other carbon sinks.

Sequestration techniques are not instantaneous and when considering their efficacy, consideration has to be given to the fact that they will therefore be acting on future (not current) CO2 levels. These levels are expected by the IPCC to be higher than today's.

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