Lenticular clouds over the Harris hills. The big camera version 💙 #scotland

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For Maths fans, 2025 is a square. 45² = 45 x 45 = 2025 Also, 9² x 5² = 2025 40² + 20² + 5² = 2025 My favourite? 1³+2³+3³+4³+5³+6³+7³+8³+9³ = 2025 #Mathematics #teaching #education

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Wild: ~50% of Chicago's building permits over past 2 decades are in central neighborhoods that had virtually no residents in 1950. www.urban.org/urban-wire/z... Or perhaps not so wild: Discretionary review mounts barriers to building in already-inhabited neighborhoods! www.urban.org/urban-wire/c...

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Heat pump electric backup update: Here's evidence that electric backup is allowing us to displace gas backup, & extend the runtime on our HP. The HP has a crossover temp of 15°F. But minimal electric heater use keeps the inside temp high enough (66-68°F) to prevent gas backup. See alt txt 🧪🔌💡☀️💨🔋

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Sometimes you don’t need to do your own research. www.washingtonpost.com/politics/202...

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