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String theorist explores dark energy and our unique 'pocket' of the universe Some celestial bodies are so cold that methane freezes; others are so hot that nuclear reactions occur. And then there's Earth, with a benign temperature hovering in the narrow range between freezing and boiling, allowing the existence of liquid water-and life.''There's no question that there are many things about the [universe] which if they were very much different, even just a little bit different, life couldn't exist, intelligent life couldn't exist,'' said Stanford physics Professor Leonard Susskind, who is currently on sabbatical and writing a popular book titled The Cosmic Landscape. ''The [universe] is truly an incredibly fine-tuned place.''
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