States in Order of Admission to the United States of America
From Delaware to Hawaii, discover when each state entered the Union and the geographic features that make every state unique.
GIS Data
Explore the City-Regions Dataset from FAO
Geography Basics
Using Landsat and NDVI to Map Vegetation Change
Geography Basics
GIS Data: Shallow Sea Mud Volcanoes
Tracing Medieval Rewilding Through Italy’s Ancient Oaks
A study of ancient oak trees reveals how changes in human land use allowed forests to expand across parts of Italy during the medieval period.
Midpen Open Space and the Harm of Repeat Disturbance
At Bear Creek Redwoods Open Space Preserve, repeated nesting season projects by Midpeninsula Regional Open Space District are altering habitat used by migratory birds.
What are Those Clumps in Trees?
Discover why squirrels build dreys, the leafy nests hidden high in trees, and why they become easier to spot after autumn leaves fall.
Crown Shyness: When Trees Need Personal Space
Why don’t tree branches touch? Crown shyness is the natural phenomenon that creates the gaps between neighboring tree canopies.
Florida’s Primary Reef-Building Corals are ‘Functionally Extinct’
A 2023 heatwave killed nearly all of Florida’s main reef-building corals, leaving the reef functionally extinct.
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.
What are the Earth System’s Four Spheres?
The systems of the earth can be divided into two main areas: geosphere and biosphere.