According to Philips designers, if you're the type who grows a bit of basil on the windowsill, you'll be addicted to raising your own crustaceans in no time.
This Philips non-spherical-biosphere is a self-contained farm for that produces hundreds of calories of various food sources a day. Its five-level design breaks down like this:
Levels 1 and 2: Plants Level 3: Algae Level 4: Fish and Shrimp Level 5: Organic Waste
From what we can tell, the system is designed to cascade nutrients from the top to the bottom (back to the top). Optical fibers capture and redirect light to the plants during the day, while methane capture from organic waste can power lights at night. The algae create oxygen for the fish.
And while maybe we'd entertain the idea that this biosphere would actually work, it's only a matter of time before a cat scales the top just shatter a mix of waste and fish all over the floor.
Here's a clip of the Biosphere, along with a few other Philips concepts.