Reminds me of the "discovery" of synchronous fireflies in 1990:
>Scientists got wise to the presence of synchronous fireflies in the U.S. in the 1990’s, thanks to the efforts of Faust, a citizen naturalist. “Growing up in east Tennessee, we called them lightning bugs. They're just part of summer,” she says.
In the early 1990’s, Faust read an article in a science news magazine that said there were no synchronous fireflies in the Western Hemisphere. “I thought, ‘Ours are synchronous – who do I tell this to?’” she recalls.
She wrote a letter to researchers, who came to Tennessee and studied those fireflies for the next twenty years.
There's a lot of stuff in the world that's unique and special, but isn't common knowledge on the internet. I think more people should go out and look around for themselves!
I didn't realize all fireflies didn't tend to synchronized. Fun read. Fireflies are one of the only "bugs" from the south that I miss. Cicadas, I suppose, have a bit of a soft spot with me. Everything else... nope.
Cicadas are so bizarre. A couple of summers ago I was around Des Moines and Ames, IA and was completely baffled by the strange noise that seemed to be everywhere and yet impossible to localize. After a few days I heard someone talking about the cicadas and learned something new!
How far north are you? We get them around Albany, NY. The big thing is having a forest-meadow boundary, where fallen leaves aren't removed. If you're surrounded by grass lawns & concrete where people rake & remove the leaves fireflies could lay their eggs in, you won't get fireflies.
Fair, it is not "north" that is my limiting factor. It is being in the Pacific North West. As another poster has said, we have some glowing bugs. Nothing like fireflies, though.
And I hasten to add, plenty of other amazing creatures.
There are fireflies in every state except Hawaii. There are more east of the Mississippi and in the south generally, but anywhere with water has some (including river valleys in arid states).
I had to google this. If you count non-flashing bugs as fireflies, sure. Nothing like the typical experience in my backyard when I lived in Alabama. They are very different bugs.
Still, neat, to be sure. Indeed, my point in the original post was that I find the wildlife out here in the PNW to be very fun and I like all of the wildlife we have. Banana slugs, as a fun example.
Do you recall anything about where those herds are, because I’ve only seen research showing that all treated herds have identifiable cattle DNA, i.e., https://www.nature.com/articles/s41598-022-09828-z
I was told when I worked at Philmont Scout Ranch [1] that they had a pure herd.
Other than that, I know Steven Rinella listed a few pure herds in his (excellent) book [2] on the American Buffalo, but I'd have to dig it out to find them for you.
"Wind Cave and Yellowstone National Parks are the only two federal herds to have population sizes large enough for sufficient testing. Both herds show no evidence of cattle introgression."
Nozzle engines absolutely have to account for the external pressure. The optimal pressure as the exhaust leaves the bell should be as close as possible to ambient for full thrust.
If the pressure at exhaust is higher than ambient, the exhaust pushes outward against the ambient pressure and you get huge exhaust plumes, and lost efficiency.
Conversely, if the pressure at exhaust is lower, the ambient pressure pushes the exhaust inward into shock diamonds[1] and you, again, lose efficiency.
Engine bells specifically yield their max efficiency at one external pressure/altitude. The reason you see shock diamonds is most often from ground-level testing (or takeoff) of engines that perform best at altitude.
> The one issue I see is that it only has one HDMI port, so you couldn't connect two screens without a dongle.
Stretching the definition of a "dongle", but the page does specifically say "Ready for all the peripherals and monitors you can throw at it" so I'm assuming some amount of USB-C daisychaining is supported
>Scientists got wise to the presence of synchronous fireflies in the U.S. in the 1990’s, thanks to the efforts of Faust, a citizen naturalist. “Growing up in east Tennessee, we called them lightning bugs. They're just part of summer,” she says.
In the early 1990’s, Faust read an article in a science news magazine that said there were no synchronous fireflies in the Western Hemisphere. “I thought, ‘Ours are synchronous – who do I tell this to?’” she recalls.
She wrote a letter to researchers, who came to Tennessee and studied those fireflies for the next twenty years.
[src] https://www.npr.org/2024/05/24/g-s1-935/synchronous-fireflie...
There's a lot of stuff in the world that's unique and special, but isn't common knowledge on the internet. I think more people should go out and look around for themselves!
reply