Danny Pilkenton

Simple, easy to use interface shows the most recent day's quakes upon start. Take more control w

Folds and Faults provides an illustrated overview of two significant topics in geology: folds and fa

Includes 12 puzzles with 3 levels of difficulty each from easy (12 pieces) to moderately challenging

This app provides a quick reference for students, educators, professionals, or anyone interested in

Puzzling Plates provides an interactive, engaging experience that inspires you to explore the large,