In 1978, the tropical city-state of Singapore received three polar bears, starting a dynasty of polar bears that ended in 2018. Within the lifespan of these tropical polar bears, the planet has undergone rapid and exponential growth in economies, human populations, agricultural intensification, deforestation, and the burning and consuming of carbon and chemicals--all indelibly changing every surface of the globe. How might the life histories of polar bears narrate the story of twentieth and twenty-first century competing colonialisms in the Great Acceleration? This paper is based on ongoing archival and ethnographic research in Singapore, Canada, and the US.