A rush to extract methane from the depths of Africa's Lake Kivu could trigger a huge upwelling of suffocating gas, potentially affecting over 2 million people.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/methane-mining-could-trigger-killer-gas-cloud
[2] http://admin.indiaenvironmentportal.org.in/category/author/shanta-barley
[3] http://admin.indiaenvironmentportal.org.in/category/journal/new-scientist
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/congo
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lakes
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/electricity
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hydrology
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rwanda