Penn State expert determined to find life on Earth-like planets

Thanks to popular Hollywood films like "E.T.," "Avatar" and "Super 8," life on other planets seems highly conceivable to people who have considered the idea that we are not alone in the universe. Jim Kasting, distinguished professor of geosciences in Penn State's College of Earth and Mineral Sciences and an expert in atmospheric evolution, is one person who considers it a lot.

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