Michael Hart, a 58-year-old man from San Diego, pleaded not guilty to smuggling hydrofluorocarbons, or HFCs — commonly used in air conditioning and refrigeration — and selling them for profit, in a federal court hearing Monday.

https://www.siliconvalley.com/2024/03/05/california-man-charged-with-smuggling-greenhouse-gases-from-mexico-into-us-in-first-of-a-kind-prosecution/

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