Tag: fluoride

Canary in a Coalmine or Parakeet in your Kitchen?

In days of old, caged canaries would be carried by mining workers down into the tunnels with them. If dangerous gases such as methane or carbon monoxide leaked into the mine-shaft, the gases would kill the canary before killing the miners. Sad for the canaries, but an effective safety device for the miners. Today you… Read more »

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