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The conservative-majority Supreme Court has taken an aggressive stance against many environmental rules in recent years, but three small victories for regulators this month have left some analysts wondering whether a shift is underway. The latest sign came on Wednesday, when the justices declined to block the Environmental Protection Agency …

Is Ireland really all that green? Ecologically speaking, the answer is no, says Eoghan Daltun, a sculptor who restored a patch of native rainforest in the Beara Peninsula, on the country’s rugged southwestern coast. “Ireland really coasts on its reputation as the Emerald Isle,” Mr. Daltun said in a recent …

Our universe might be chock-full of cosmic wonder, but you can observe only a fraction of astronomical phenomena with your naked eye. Meteor showers, natural fireworks that streak brightly across the night sky, are one of them. The latest observable meteor shower will be the Orionids, which have been active …