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Science 25 September 2009:
Vol. 325. no. 5948, pp. 1656 - 1658
DOI: 10.1126/science.1175677
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Perspective

Onshore Geologic Storage of CO2

Franklin M. Orr, Jr.

The possibility that substantial quantities of CO2 can be injected into subsurface porous rock formations has been investigated sufficiently to show that pore space available to contain the CO2 is abundant. Multiple rock types and physical mechanisms can be used to trap the CO2 indefinitely. With careful site selection and operations, leakage to the near-surface region can be avoided. The next step is to test these injection processes at the scale of a large power plant.

Precourt Institute for Energy, Stanford University, Stanford, CA 94305–4230, USA. E-mail: fmorr{at}stanford.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)