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By Kyrmyzy Turebayeva For decades, scientists believed that the earliest four-limbed vertebrates developed much like modern amphibians: They hatched from eggs, passed through a larval tadpole stage and then underwent metamorphosis into adults. However, a new study published in Science challenges that long-held view.



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By Akia Thrower The 2025 State of the Birds report, an evaluation of U.S. birds by conservation organizations, showed a continued decline in bird populations across the nation. The decline is largely due to the habitat loss of wetlands.