The engineering of the giant dragonflies of the Permian: revised body mass, power, air supply, thermoregulation and the role of air density
It looks like Meganeura monyi, with a mass of 150 g, would have flapped its wings at 3 Hz, which means it'd look more like a bird than an insect. It would also have a whole lot of thermoregulation issues even without flight; just rejecting solar heat.
attention all Touhou gamers:
I wrote a deep and personal reflection on how Touhou Project inspires me to live my best life
The Resilience of Life to Astrophysical Events. "We do not fully understand the mechanisms by which life started, but once it exists on an Earth-like planet, the complete removal of all life (other than through evolution of the host star) is a very unlikely event." https://www.nature.com/articles/s41598-017-05796-x
Mice sing songs that approach in complexity songs of songbirds.
"Ultrasonic Songs of Male Mice" https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.0030386
Acetone as an anticonvulsant. "Therapeutic indices are either comparable or better than that of valproate, a standard broad-spectrum anticonvulsant." https://www.ncbi.nlm.nih.gov/pubmed/19049597
"this is incredible, anti-cheat engineer at blizzard reverse-engineered the maps that reverse-engineered starcraft and abused a buffer overflow to inject arbitrary code, and emulated the intended behavior in a newer starcraft version so that maps still work" https://0xeb.net/wp-content/uploads/2018/02/StarCraft_EUD_Emulator.pdf via @whitequark
TIL silica contributes 2-5% of dry mass of many grass leaves, and is apparently used as defense against folivorous insects https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2656.2006.01082.x
some dinoflagellate, probably: "but what if I added more heterocycles?"
this is a toxin, ciguatoxin (one of the forms of), remarkable in its low effective dose (as low as 0.1 ppb), long half-life (it persists for many years¹) and the fact that it's apparently sexually transmitted², which I haven't previously seen said about a toxin.
also it looks neat.