This morning I am working with teachers who are exploring uses of Google Earth across all grades and subjects. This is the starter list of resources. Please feel free to add more in the comments.

Resources:
Design
– Google Earth Design Blog
– Google Earth Showcase
– SERC How to Teach With Google Earth
3D Model Warehouse
Uploading Data to Google Maps Engine
Public Data Explorer
Google Earth Gallery 
Monster Milk Truck

Science
– Climate Change, Flooding, Volcanoes
– Google Earth Outreach
– Projects by Subject
– Shark Tracking
– Wildlife Tracking
– KQED Science Maps
– U.S. Watersheds (complete directions for working with watersheds)

English/ Language Arts
– Google Lit Trips
– Projects by subject

Math
– Maths Maps
– Real World Math
– Google Earth Walks

Social Studies
– Social Studies Central
– Projects by subject
– Great Explorers and more
– 10 US History Tours
– Culture and History
– GE Teach