An explosion inside a coal mine in southwest Pakistan killed 11 miners while several were rescued on Monday. Investigators were still working to determine the cause of the blast.
The apparent presence of methane on Mars has fuelled intense speculation that the gas could emanate from microbial Martians beneath the surface.
Beijing: China has built the world's largest facility to turn excess methane gas from coal mines into electricity, which could help the communist giant reduce its emissions.Lu'an Group - which completed the facility at Shanxi
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