Geography

Australia

Bureau of Meteorology
The original BOM.com, use this to investigate the weather all over Australia.
Indigenous Calendars
This is a list of First Nation Peoples' calendars for various regions of Australia
Climate Kids
NASA's website dedicated to investigating and explaining global natural issues.

G

World

Blank World Maps
A series of blank maps of various continents and regions complete with basic information and country borders.
Google Earth
A magnificent interactive way to explore the world. Now with 3D mapping and Voyager, a feature that curates places for the viewer.