Talk:Land/to do
Useful resources include National Geographic's education resources, as well as Tarbuck & Ludgens's Earth: an introduction to physical geology (Pearson) for physical science topics.
For discussions on sections to add, see this, this and this.
Pathfinders: A Global History of Exploration by Felipe Fernández-Armesto is a good resource for the history of exploration section; those changes should also be made in the Exploration article.
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