The best lack all conviction, while the worst
Are full of passionate intensity. -- W.B. Yeats (anticipating 2025)
Warsaw's water quality is monitored by eight clams with magnets attached to their shells. If contamination in the water causes the clams to close, the magnets trigger an alarm and shut off the city's water supply.
Thank you, little guardian molluscs.
🧪🌏🚰