To detect dark matter, we just need to build a bird feeder that spins two squirrels around the rim in opposite directions at relativistic speeds and collides them together.

"Dark Matter", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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To detect dark matter, we just need to build a bird feeder that spins two squirrels around the rim in opposite directions at relativistic speeds and collides them together.