Did you know the Rhine River is a major waterway in Europe? It’s about 540 miles long and carries chemicals from one-fifth of the world’s industries. Yet, the Swiss Alps are incredibly clean. This is ...
Did you know the Ring of Fire, a horseshoe-shaped zone around the Pacific Ocean, has about 750 to 915 active or dormant volcanoes? This is roughly two-thirds of all volcanoes worldwide. The Ring of ...
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