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A Saturn moon could harbor alien life, and the signs are growing

For decades, the search for life beyond Earth has focused on distant exoplanets and the rusty plains of Mars. Now, a small ...

Earth's growing heat imbalance driven more by clouds than air pollution, study finds

Earth is taking in more energy than it releases back to space—a growing "energy imbalance" that is fueling global warming. A ...

West Antarctica's history of rapid melting foretells sudden shifts in continent's 'catastrophic' geology

Due to its thick, vast ice sheet, Antarctica appears to be a single, continuous landmass centered over the South Pole and ...