Caitlin Dempsey
What are Those Clumps in Trees?
A dense clump of dried leaves and twigs in a tree is mostly likely a squirrel’s nest, known as a drey.
Monarch Butterfly Overwintering in California
November and December are the best times to see large clusters of monarch butterflies overwintering in the coastal groves of California.
X is Longitude, Y is Latitude
Here are some simple strategies for remembering that X is longitude and Y is latitude in GIS.
U.S. States With the Most Extreme Elevation Spans
Here are the states with the greatest difference in elevation between the highest and lowest points.