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Open Buildings: AI-powered maps for a changing world

Ghana’s urban population has more than tripled in the past three decades. Kumasi, Ghana’s second largest city, has seen lots of growth over the past few years. Here, we see rapid growth in Pramso, a village on the outskirts of Kumasi.

On September 28, 2018, a 7.4 magnitude earthquake off the coast of Indonesia triggered a tsunami, affecting around 1.5 million people on the island of Sulawesi. After this crisis the built area recedes from the coastline and the effects of the earthquake are visible in the data.

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