Articles
High Resolution Ecosystem Map of the Contiguous United States and Adjacent Areas
NatureServe has developed an updated 30-meter hexagon map of regional ecosystems in the contiguous United States and adjacent areas.
Lake Chapala: a Tectonic Lake at Mexico’s Triple-graben Intersection
Lake Chapala was formed at the intersection of three grabens.
Rivers that Flow Backwards
Read about how the Amazon once flowed east to west and how the strength of Hurricane Isaac once change the course of the Mississippi river.
Northernmost Point in the United States
Above the Arctic Circle, Point Barrow is the northernmost point in the United States.
How to Create a Radial Flow Map Using QGIS
Learn how to create a radial flow map in QGIS to visualize migration using metro-to-metro data from the U.S. Census Bureau.
Map and Chart of Cardinals and the 2025 Papal Conclave
The 2025 papal conclave is underway. Here's which countries the 135 voting cardinals eligible to elect the next pope come from.
World’s Biggest Iceberg
The largest iceberg in the world is A-23A, with an area of about 1,240 square miles.
Only State… Geography Facts
Here are some interesting geography facts that are unique to individual U.S. states and do not occur in any other state.
Satellite Imagery of Clouds
Listed here are different clouds formations as seen on satellite imagery.
Water on Earth
Earth holds trillions of tons of water, mostly in oceans. Only 2.5% is freshwater, primarily found in glaciers, groundwater, lakes, and rivers.
Where are GIS Professors Hired From?
Researchers analyzed GIS faculty hiring data to identify geographic patterns influencing job placement.
Types of Agricultural Patterns Visible from Space
Agricultural landscapes, when viewed from space, reveal distinct patterns shaped by historical practices, local geography, and technological influences.
Defining How Much of the World is Covered by Forests
With no universal definition, mapping and comparing forest coverage around the world is challenging.
Glacial Flour Makes Some Lakes Turquoise
Glacial flour, the fine dust created as glaciers move over land, turns lakes a turquoise color by reflecting blue and green light.
Geography Printables
GeographyFun features maps, crosswords, and word searches for educators, students, and geography enthusiasts who love exploring the world through words.
Deep Space Mapping of Saharan Dust Height
Researchers used four years of measurements from a deep space satellite to calculate the average monthly heights of Saharan dust clouds.
Hydroclimate Whiplash: the Impact on California Wildfires
Hydroclimate whiplash - the rapid swing between drought and heavy precipitation - plays a role in the increasing intensity of California wildfires.
Florida’s Largest Open Water Estuary
Covering an area of about 400 square miles, Tampa Bay is Florida's largest open water estuary.
Cartopareidolia: Seeing People and Animals in Maps
Cartopareidolia is the phenomenon of seeing people and animals in maps.
Shapefile Viewers
Explore viewers for visualizing GIS vector data in shapefile format, available for both desktop and web browsers.
Sado Island: An Example of Tripartite Geography
Sado Island is an example of a landmass with tripartite physical geography.
Understanding Glacier Grounding Lines
Grounding lines are the boundaries where glaciers and ice sheets transition from resting on solid ground to floating on seawater.
Pan Sharpen Landsat Imagery in QGIS
This QGIS tutorial guides you through pan sharpening Landsat imagery by combining the 15-meter panchromatic band with lower-resolution multispectral bands.
Pan Sharpening in GIS
Enhance spatial detail in multispectral images with pan sharpening. Learn how this GIS technique combines data for sharper, more detailed satellite imagery.
Isostatic Rebound: How Earth’s Surface Rises after Glaciers Retreat
Isostatic rebound is the Earth's slow rise after glaciers melt, reshaping coastlines, revealing landforms, and altering sea levels globally.
Cavum: Hole-punch Clouds
Cavums are also known as hole-punch clouds or fallstreak holes.