A base map of Asia from 1921 showing the general population distribution of the region at the time. "The climate of southeastern Asia is so warm and moist that food plants grow there in abundance. Nearly half the people of the world live...

" North China includes the densely populated and intensively cultivated North China Plain, the loess-covered uplands of Shansi, northern Shensi, and eastern Kansu, and the sparsely populated, semiarid steppes of Inner Mongolia....

Site discusses and analyzes the daily weather in the tundra. Provides a map of the world that is color-coded to show the different biomes and systems of the world.