28/10/2025
                                            ☕🐟 Coffee waste… that feeds fish?
A new study fed spent coffee grounds — your leftover espresso gunk — to Nile tilapia. The result? Faster growth, stronger immune systems, and higher antioxidant activity.
At 4% coffee extract, fish performed best. Too little or too much, and the effect dropped. A reminder: more isn’t always better.
The bigger idea:
Don’t ask “how do we get rid of waste?”
Ask “who might want it?”
Coffee shops become fish feed suppliers. Fish farms become recycling systems. Circular economy stops being theory — it becomes lunch.
Sometimes innovation isn’t new technology. It’s seeing old things differently. ☕🐟
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