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Was Mars too cold to sustain life?

July 25, 2005 CalTech, MIT researchers study meteorites and conclude that if water existed, it would have been locked up in ice. TAGS: rock, study, temperature, researcher, theory

Bacteria froze the Earth, researchers say

August 3, 2005 A deep freeze 2.3 billion years ago may have been caused by bacteria, an insight opening up debate on how climate change operates. TAGS: bacteria, oxygen, carbon, freeze, rock, planet, temperature, researcher, professor

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