ppm
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What is PPM, and what does it have to do with capitalism and climate change?
The nitty gritty of measuring atmospheric CO2 involves Algerian monks and Mongolian schoolteachers, and has some pretty major real-world implications.
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Critical List: Carbon dioxide hits 400 ppm in the Arctic; bedbugs don’t like boozy blood
Carbon dioxide levels in the Arctic have reached 400 parts per million (ppm). Once upon a time, they were 275 ppm. 350 ppm is considered a decent level to aim for these days. Peanut butter and deli meats have traces of flame retardant in them. Fishing fleets don’t care what regulators say — they’ll fish […]