Trimz debuted their children's room DDT-impregnated wallpaper in 1946. It was available in two patterns: "Jack and Jill" or "Disney Favorites."
It was certified to be absolutely safe "because the DDT is fixed to the paper. It can't rub off!" But since you're not going to find any similar product sold nowadays, I'm guessing that it actually did rub off.
Researchers at Nanyang Technological University in Singapore recently made an unusual discovery, which is that "the magnetic properties of living cockroaches are strikingly different from those of dead cockroaches."
Place a living cockroach in a magnetic field and it'll become magnetized, and then stay magnetized for about 50 minutes.
Place a dead cockroach in a magnetic field and it'll also become magnetized, but then remain magnetized for almost 50 hours.
The reason for the difference:
Cockroaches become magnetized because they contain magnetic particles that become aligned with an external magnetic field. These particles are trapped in a runny medium that has low viscosity in living cockroaches. But as soon as the creatures die, the medium begins to harden and its viscosity increases.
So I'm curious how strongly magnetized dead cockroaches become. Would it be possible to use them as refrigerator magnets?
I'm a bit surprised these anti-mosquito leggings never (to my knowledge) caught on, because if they actually worked then who cares if they looked dorky. Then again, I suppose DEET had already been discovered.
Diploptera punctata, aka the Pacific Beetle Cockroach, is the only known viviparous cockroach, which means that its offspring develop inside its body before it gives birth to them. It bears live young.
While its babies are growing, it nourishes them with a milk protein crystal. Some doctors in India think this cockroach milk crystal would make a "fantastic" protein supplement for humans, since it contains three times the energy of an equivalent mass of dairy milk.
Dr. Subramanian Ramaswamy extols its virtues, "It's time-released food. If you need food that is calorifically high, that is time released, and food that is complete — this is it."
Paul Di Filippo
Paul has been paid to put weird ideas into fictional form for over thirty years, in his career as a noted science fiction writer. He has recently begun blogging on many curious topics with three fellow writers at The Inferior 4+1.