Landforms & Water
Lake Sevan: Armenia’s Largest Lake
Explore Lake Sevan’s changing geography and choose a realistic peninsula, western-shore or overnight visit, with current monitoring data and practical safety checks.
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Physical Geography
Explore 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.
Landforms & Water
Lake Lessing
Lake Lessing (Լեսինգ) is a small mountain lake on the northeastern slope of Mount Aragats in Armenia’s Aragatsotn Province. The Hrazdan basin-management plan adopted in 2022 lists its…
Landforms & Water
Akhurian Reservoir
Akhurian Reservoir is an artificial reservoir on the Akhurian River along the border between Armenia and Türkiye (Turkey). It is known as Arpaçay Baraj Gölü in Turkish and…
Landforms & Water
Mount Vinson: Highest Mountain in Antarctica
In Antarctica’s far interior, a white wall rises above the ice of the Sentinel Range. Mount Vinson is best understood through its exact location, the difference between the…
Explainers & Big Questions
Indian Ocean: The Only Ocean Named After a Country
The Indian Ocean’s name connects a familiar country with a much older geographical tradition. Understanding that distinction explains why the ocean is associated with India without crediting its…
Explainers & Big Questions
Which Countries Have No Snakes at All?
Most of the world has snakes, from tropical forests to semi-arid hillsides. But a handful of places buck the pattern. If you’re ophidiophobic (afraid of snakes), the map…
Explainers & Big Questions
Point Nemo: The Most Remote Place on Earth — Or Is It?
Imagine a place so isolated that the closest human beings are often not on Earth at all, but orbiting 254 miles (408 kilometers) above it. This isn't science…
Countries
What is the biggest country without a river?
Rivers have long shaped settlement, farming, transport, and national development, but not every country has a permanent one. Saudi Arabia stands out because its immense territory contains seasonal…