What Is the Longest Freshwater Lake in the World?
Lake Tanganyika is the world’s longest freshwater lake in the world, stretching approximately 660 kilometers (over 410 miles) in length.
Water Science
The Salmon Lifecycle: An Epic Migration
The salmon lifecycle is a remarkable journey, unique in the animal kingdom. These fish travel thousands of miles throughout their lives.
Flash Flooding: Rising Waters, Rapid Risks
Flash flooding is a sudden and intense flooding that happens in a short period. It happens with little warning and rapidly fills the streets.
Stream Ordering and the Strahler Method
Stream ordering is a way to classify the size of streams. The Strahler method is a way to classify streams based on their branches.
The Hydrosphere: A Deep Dive into Earth’s Water
The hydrosphere is a vast and dynamic system of all things watery. In fact, the hydrosphere covers about 71% of our planet’s surface.
10 Roles of a River: Beyond Our Waterways
Rivers are dynamic and essential. Plus, they fulfill diverse roles in our world. You’ll learn the significance of a river is far-reaching.
10 Unsolved Mysteries of the Deep Ocean
The ocean is vast and still holds many mysteries. Today, we’re going to dive deep and explore 10 of these fascinating mysteries.
What Causes Tsunamis? A Guide to How Tsunamis Form
Tsunamis are long, tall waves that can be disastrous to anything nearby. But what causes tsunamis? 80% start from earthquakes. And how do tsunamis form?
Ocean Salinity: How Much Salt is in Oceans?
Oceans are salty because runoff transports minerals and salts from the surface. When ocean evaporates from heat, salt remains in the ocean and water rises.
Coral Reef Facts: Ocean Biodiversity Hotspots
Coral reefs are biodiversity hotspots for ocean life. Remarkably, about 1/4 of marine species reside in them. So the spotlight is on coral reefs for protection.
Ocean Exploration: 20% Explored, 80% Unexplored
We’ve mapped 100% of oceans at 5 km resolution using satellite radar. We’ve mapped 20% with bathymetry sonar. But nearly 80% of oceans have gone unexplored.
How Much Water Is on Earth?
Water is in the ground, on the surface, in the air and in our bodies. But how much global water distribution is in glaciers, groundwater, rivers and lakes?
What is the Hydrologic Cycle? 3 Steps of the Water Cycle
The hydrologic cycle describes how water moves continuously in nature. From evaporation, condensation and surface runoff – water is always in motion.
Did Earth’s First Water Come from Comets, Volcanoes or Asteroids?
2 theories exist for the origin of water on Earth: Did comets transport water? Or was there degassing from volcanoes from rocks existing within the crust?
Why Watersheds Are Like Upside-Down Umbrellas
When it rains, water zig-zags all the way through a tributary system to a river or lake. Like an upside-down umbrella, a watershed catches all rain water.