Did a collision with a giant asteroid or comet change the shape of life on Earth forever? It is widely agreed that such an object -- 10 kilometers across -- struck just off the coast of the Yucatan ...
As Congress remains at an impasse on an agreement to fund government operations, several sites under the National Park Service (NPS) have brought their operations to a halt. Across the country, parks ...
The United States and its allies have imposed broad economic penalties on Russia over its war in Ukraine. As the conflict continues, experts debate whether the sanctions are working. Since Russia ...
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