Last Updated: Thursday, October 11, 2012, 17:18
Presence of excessive levels of carbon dioxide (CO2) in our atmosphere is causing global temperatures to rise and glaciers and ice caps to melt, researchers have warned.
Last Updated: Wednesday, September 12, 2012, 12:54
Scientists have received the clearest evidence yet of carbon dioxide snowfalls on Mars based on data provided by NASA`s Mars Reconnaissance Orbiter (MRO), NASA reported Tuesday.
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