In 2011, I saw fascinating midge swarms on the Interstate 80 Yolo Causeway between Davis and Sacramento, featuring rays and beams of flying insects. The rays were arrayed symmetrically on both sides of the freeway, 60 degrees from the horizontal, and gave the Causeway a majestic, Art Deco flourish. Until I started reading more on the Internet, I didn't realize these swarms are fairly common, especially at higher latitudes in summertime.
I find it fascinating how the midges will anchor themselves and swarm at an angle from a certain spot. Why that spot and why that angle? Inquiring minds want to know. I'm inclined to write a sci-fi story about these choices.
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