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Google requests permission to release 32m mosquitoes in California and Florida
(www.theguardian.com)
This is a most excellent place for technology news and articles.
You are quite correct in your current impression of the state differences. My backyard in my previous Florida home bordered on a protected watershed area. I referred to it as Dagobah, and you essentially couldn't go in the backyard for a good part of the year without getting swarmed.
california gets teh occasional mosquito "infestation" wierdly just before winter and right after summer, and nots even every year. since most winters, years have been colder than normal i have seen less mosquitoes than before the pandemic, thats a big stretch. since its quite dry up in norcal. we know historically the south gets mosquitoes due it being swampy and its a breeding ground for mosquitoes, especially invasive ones.