Good Gear Guide
In Pictures: 10 cool and useful Google Maps mashup...
Track Plant and Animal Life Cycles
The USA National Phenology Network added layers of its own data over Google Maps to create the Phenology Visualization Tool, which lets you view the life-cycle stages of various animals and plants. You can overlay this data with climate charts, too, to observe the interaction of climate change and animal migration.
In Pictures: 10 cool and useful Google Maps mashups