Atolls & Coral Formation: Mapping Nature’s Ringed Islands
What is an atoll? An atoll is a ring-shaped coral reef, island, or series of islets encircling a central lagoon,
Read MoreExplore Earth’s physical systems—from mountains and rivers to climate patterns and fragile ecosystems. This hub organizes our best guides to landforms and water, weather and climate, biodiversity, and today’s pressing environmental issues. Start here, then dive into focused subtopics or explore places by continent, country, and city.
What is an atoll? An atoll is a ring-shaped coral reef, island, or series of islets encircling a central lagoon,
Read MoreWhat is the Valley of Geysers? It’s the world’s second-largest concentration of geysers—about 90 active vents packed into a 3.7-mile
Read MoreIf you picture endless dunes when you hear “desert,” you’re only half right. Some deserts are white with ice, not
Read MoreWhen you read that a policy works “in your area,” what is that “area,” exactly? A neighborhood? A county? A
Read MoreClimate change is one of the most critical topics discussed today. It affects everything from weather patterns to wildlife and
Read MoreClimate change is the long-term shift in Earth’s average weather patterns—especially temperature and rainfall—caused mainly by people burning coal, oil,
Read MoreAnts are fascinating creatures with an excellent social hierarchy within the colonies. They are known to have a very wide
Read MoreKhudadov Forest — a forest situated on the left bank of the Mtkvari River in Tbilisi. Perched on a mountain
Read MoreThe quest to identify the world’s lowest points is a fascinating journey across diverse geographies. From the hypersaline waters of
Read MorePeople ask this a lot—and get different answers. That’s because “most volcanoes” can mean (1) the most volcanoes known to
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