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Was Earth’s evolution shaped by a dying star? A 2.5-million-year-old clue emerges
Of the heavy metals spewed by dying stars, the astronomers were particularly interested in iron-60. That’s because iron-60 is ...
Humans are overwhelming Earth’s ability to sustain us. We must fight for its future (Guest Opinion)
Earth Day, April 22, calls us to act against global warming, decimation of other species and environmental degradation, write ...