Some dentists use Laughing Gas for its analgesic effects instead of local anaesthetics. It's supposed to prevent pain when they get close to your nerves. I've never had the pleasure of such a treatment and my dentist prefers the modern "slight discomfort" version of the poke and needle variety. Of course, that's miles ahead of the procedure I experienced in my early years when the dentist appeared to use a hammer drill to lay bare the live nerves of my teeth--without any analgesic at all. But I'm getting sidetracked. This post is about the newest menace to the globe: Laughing Gas. Believe me this is not a laughing matter. Some activists think that this gas is another villain causing "climate change," "global warming," polar ice melting, rising ocean levels, droughts and floods, and all other calamities. Obviously, the claims of carbon dioxide (CO2) causing every conceivable misfortune is running into some difficulties; it must be high time to find another culprit.

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