Grind it down, pour in a sprinkle here and a dash there, and wait for results. That's the recipe for helping the oceans to absorb more of our carbon dioxide emissions: add limestone. It may not only help reduce global warming but could even reinvigorate ailing coral reefs.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/sprinkle-limestone-could-help-oceans-absorb-co2
[2] http://admin.indiaenvironmentportal.org.in/category/author/kate-ravilious
[3] http://admin.indiaenvironmentportal.org.in/category/journal/new-scientist
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-ecosystems
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/limestone
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-life
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oceans-and-seas
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/canada
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-science
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-mitigation
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-sequestration