The Water Knife by Paolo Bacigalupi projects the Southwest US into the not-to-distant future after climate change has already ravaged the most vulnerable areas of North America. The narrative itself was gripping, and the creativity of his world-building was laudable, but what stood out to me was the region's dependence on controlled environment agriculture for its food.
Rich people live in large, climate controlled buildings that grow their own food using vertical hydroponics and process their waste with methane digesters and aquaponics. Fish, algae, and bacteria have been specifically bred for their abilities to process waste and filter water. Sensors were everywhere to monitor all of the key parameters and keep things in check.
While it was awesome to see hydroponics and aquaponics on display in a prominent work of science fiction, it was also sad to imagine them being so heavily relied upon in the future US as a way to feed the rich. When I talk to folks about CEA, climate change and population growth, I like to say that CEA is a key part of the solution, but not the solution itself.