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Supernova caused lightning, which caused fires, which (maybe) caused humans to stand upright

Back in the unpoliticized Pliocene it’s possible that cosmic rays bombarded Earth and triggered lightning which started fires all around the Earth. This may (warning: speculation) have pushed human ancestors to stand on two legs. In the politicized Holocene, however cosmic rays are “irrelevant”. Ancient cosmic rays can set the Earth on fire apparently, change dominant species, and leave a charcoal layer around the Earth. But changes in cosmic rays lately can *not* cause any changes in modern lightning and cloud cover.

Color me skeptical that there is a cause and effect link between fires and homo-four-legs becoming homo-two-legs. It’s possible, and interesting, but a little bit “just so”. There are many advantages in standing upright — seeing further, reaching higher, standing in water, and carrying booty or babies. Some dinosaurs also evolved to be bipedal.

The study reminds us that for most of human history Space Weather was important. It’s only modern climate models that decree astronomical-stuff = zero.

Another previous study showed that lightning strikes occur in time with the spinning Sun in 150 year old Japanese farm records.

Did ancient supernovae prompt human ancestors to walk upright?

Supernovae bombarded Earth with cosmic energy […]

Lightning strikes occur in time with the spinning Sun in 150 year old Japanese farm records

Our understanding of the sun’s effect of Earth’s weather is so immature

Remarkably, some Japanese families kept weather record diaries in the 1700 and 1800s, and some for as long as 150 years. The connections they reveal are tantalizing but so incomplete. We are trying to fish out primitive signals from murky water. The Sun turns around on itself every 27 days, so these researchers are looking for repeating patterns in lightning that fit, but the poles of the sun spin slower than the equator and the sun spots can take their own time. Hence, it’s not a neat “27” days.

During periods of high solar activity, they found regular peaks in lightning activity with the right timing, from May to September when the cold Siberian air mass is not so influential.

Other studies we’ve discussed here have investigated long solar cycles on the 11 year or 200 year scales. But here, the researchers are thinking of day to day weather, and looking for a solar influence on timeframe that might improve weather forecasting. Obviously there is a long way to go. As for mechanisms they suspect that it’s the solar wind that is influential, but they don’t know, when […]