Why does India look so different from one state to the next?
India's cultural map was drawn by water. Where the rain came in one season and then stopped, people built to store it; where two monsoons met, they built to drain it. The staple grain follows the rainfall, the fat follows the grain, and the architecture follows both. This pillar starts with the physical constraints because almost every later difference — in food, in cloth, in the shape of a house — is an adaptation to one of them, and the adaptation is usually better engineering than anyone gives it credit for.
Inside this pillar
The monsoon calendar
One date decides when rice is sown, what onions cost, and when weddings are held.
in preparationThe Himalaya as a climate wall
What the range blocks, what it lets through, and why the same latitude is desert on one side and rainforest on the other.
in preparationThe Gangetic plain
Alluvium, the highest rural population density on earth, and a river that keeps moving its own bed.
in preparationThe Deccan traps
Two million years of lava weathering into black cotton soil — and the cotton trade that grew on it.
in preparationThe Thar and its rain shadow
Why the desert sits where it does, and how building in it produced the stepwell and the jaali.
in preparationThe western Ghats
A wall of hills that wrings the monsoon dry, and one of the world's great biodiversity hotspots.
in preparationThe linguistic map
Two large families, two isolated branches, and 22 languages the constitution names. State borders follow language, not the other way round.
in preparationHow the census counts people
Religion, caste and language are three separate instruments. Confusing them is the most common error in writing about India.
in preparation