Geography Of The World
The 10 Highest Mountains In The United States
The 10 Highest Mountains in the United States are all located in Alaska and are noted for their glacial settings and icy summits.
How Sea Lampreys Nearly Destroyed the Great Lakes
How did sea lampreys nearly destroy the Great Lakes? These parasitic invaders collapsed the lake trout fishery before a decades-long fight back.
How Quagga Mussels Are Outcompeting Zebra Mussels in the Great Lakes
How quagga mussels are outcompeting zebra mussels in the Great Lakes, from their deep-water edge to the ecosystem damage driving fish and algae problems.
How Are Canyons Formed?
A canyon is a deep cleft between escarpments or cliffs, often formed by rivers, weathering, erosion or tectonic activity.
The Biggest Lakes in British Columbia
Which is the biggest lake in British Columbia? Explore the province's largest, led by the 680-square-mile Williston Lake, and the rivers that feed them.
How Grass Carp Threaten the Great Lakes Wetlands
Learn how invasive species threaten ecosystems and why grass carp have become a major concern after their introduction to non-native waters.
Which Country Has the Most Fresh Water?
Brazil, Russia, and the United States are home to the top three largest amounts of renewable fresh water.
5 Most Snake-Filled Bodies Of Water In New York
Discover five New York lakes and wetlands where northern water snakes and garters concentrate along the shoreline, plus safety tips.
6 Most Snake-Filled Bodies Of Water In Connecticut
Connecticut's rivers, lakes, reservoirs, and forest ponds create ideal habitat for snakes, with six waterways standing out for their abundant populations.
The Lakes That Used to Be Part of the Ocean
Earth is constantly evolving through geological processes, both slow and catastrophic. Among those processes are evolutions of lakes which were once oceans.
How Many Cities Sit on the Shores of the Great Lakes?
Discover which major cities line the Great Lakes, from Chicago and Toronto to Duluth and Buffalo, across eight US states and Ontario.
Oldest Mountain Ranges Of The World
It takes a very long time to form a mountain. Small volcanoes can grow up in just a few months, but a big mountain typically takes thousands of years to take shape.
The Lakes That Sit on Fault Lines in the United States
Fault lines built some of America's most striking lakes. See how quakes and shifting crust shaped Tahoe, Reelfoot, and more.
The 10 Deepest Lakes in the World
The world's deepest lakes generally formed through ancient cataclysmic events, leading to deep rifts in the Earth which became filled with water.
How Long Would It Take to Drain Lake Superior?
Discover Lake Superior’s vast size, 191-year retention time, ecology, wildlife, islands, and importance to Great Lakes life.
10 Largest Lake Islands In The World
Lake islands are islands that are situated within a lake. Some of the world’s largest lake islands are discussed in this article.
10 Largest Lakes In Europe
Most of Europe's biggest lakes hide in just three countries. Discover the 10 largest lakes in Europe and the Ice Age history that shaped them
The Cleanest Lakes in the World
Clear alpine basins and protected watersheds reveal the world’s cleanest lakes, including wonders such as Blue Lake, Crater Lake, and Lake Mashu.
The Clearest Lakes in the World Ranked by Visibility
Lake visibility measures how far light travels in water before being obscured by particles or organisms, with rankings based on documented measurements.
What Happens If Lake Mead Runs Dry
Lake Mead sits about 150 feet above dead pool. Here's what a dry reservoir would mean for water, power, farms, and wildlife across the Southwest.
The Largest Freshwater Lakes in the World by Volume
The world's 10 largest freshwater lakes by volume span North America, Africa, Asia, and Antarctica, varying in age and formation.
The Major Deserts Of The United States
Saguaro forests, gypsum dunes, and the hottest place on Earth. Discover the major deserts of the United States and the surprising variety within each
6 Most Snake-Filled Bodies Of Water In Arkansas
From Lake Ouachita to the White River, these are the 6 most snake-filled bodies of water in Arkansas, where cottonmouths and rattlesnakes share the water.
The 10 Longest Rivers in the United States
Combined, the Missouri and Mississippi would rank among the longest rivers on Earth. Discover the 10 longest rivers in the United States and where they flow.
The Lakes That Sit Inside Volcanoes
Volcanic lakes fill eruption craters or calderas, creating dramatic waters like Crater Lake, Toba, and Taal’s nested volcano lakes worldwide.
6 Most Snake-Filled Bodies Of Water In Utah
Utah is home to 28 different species of snake, including seven of which are venomous rattlesnakes, and many of these species thrive near major water bodies.
Why the Great Lakes Are Considered an Inland Sea
Why the Great Lakes are called an inland sea, from their ocean-sized waves and massive scale to their freshwater identity.
The Lakes Formed by Earthquakes in the United States
Explore six American lakes shaped by earthquakes, from Reelfoot to Quake Lake, where sinking land and landslides remade landscapes forever.
The Pink Lakes of the World and Why They Are Pink
Pink lakes get their color from salt-loving microbes or minerals, deepening in hot months and fading when rain dilutes salt.
The Lakes Heated By Geothermal Activity
These geothermal lakes boil, steam, shift colors, and reach extreme temperatures, revealing how volcanic heat can transform water into something otherworldly.
5 Most Snake-Filled Bodies Of Water In Indiana
Indiana’s lakes and rivers support diverse snake habitats, especially wetlands and shorelines, where watersnakes and queensnakes are commonly encountered.
The World's Longest Mountain Ranges
The world's longest mountain range hides almost entirely underwater. Discover Earth's longest ranges, from the mid-ocean ridge to the towering Andes.
6 Most Snake-Filled Bodies Of Water In South Carolina
Snakes are thriving in South Carolina’s waters, and the six bodies of water that follow are where the highest concentration of them lives.
5 Most Snake-Filled Bodies Of Water In Idaho
Rattlers swim, gopher snakes bluff, and garters fill the coves. These are the five most snake-filled bodies of water in Idaho and when to watch out.
10 Largest US Lakes
The U.S. has over 102,500 lakes, with Alaska leading in number, Minnesota in named lakes, and the Great Lakes spanning 94,250 square miles.
Tears Of The Turtle Is America's Deepest Limestone Cave
Nearly half a mile straight down, Montana's Tears of the Turtle is America's deepest limestone cave. Discover the record-breaking descent few will ever attempt.
10 Most Famous Rivers In The World
Rivers are the lifeblood of our world. This list looks at the ten most famous rivers in the world, from the Nile to the Mekong.
The 10 Lowest Places On Earth
The Earth's surface exudes an impressive range of elevations. The following list is all about highlighting the lowest points across the terrestrial landscape.
5 Most Snake-Filled Bodies Of Water In Missouri
From the Mississippi River to Table Rock Lake, these are the 5 most snake-filled waters in Missouri, where watersnakes and cottonmouths thrive.
6 Most Snake-Filled Bodies Of Water In Delaware
Discover snake habitats around Delaware’s ponds, rivers, and swamps, including where copperheads may occur and which nonvenomous snakes are most common.