Sequestered Carbon Dioxide Is NOT Different from Nuclear Waste

A long-term simulation of the environmental effects of sequestered carbon dioxide ends up with a conclusion that CO₂ stored in either deep sea or underground is not different from nuclear waste.

There are two places we can store the captured CO₂: deep ocean or underground.
(1) If we sequester CO₂ in deep ocean, ocean acidification and oxygen depletion will inevitably endanger the ocean ecosystem. In addition, we cannot avoid leakage from the ocean carbon reservoir.
(2) If we sequester CO₂ in underground, the "leakage" of the stored CO₂ will impose unanticipated burdens on our offspring. Therefore, the author asserts that sequestering CO₂ underground is in essence the same as storing nuclear waste under Yucca Mountain.

I think the message from this research is:
"The carbon capture and sequestration (CCS) cannot be any way to mitigate anthropogenic climate change. Burying CO₂ is just another way of hiding our mess from our children."

Source: Shaffer, G. (2010). Long-term effectiveness and consequences of carbon dioxide sequestration. Nature Geoscience, doi:10.1038/ngeo896. [Full-text at http://dx.doi.org/10.1038/ngeo896]

Image source: Scottish Centre for Carbon Storage, School of GeoSciences, University of Edinburgh