Wouldn't the immunity also work in reverse? A bacteria with opposite chirality wouldn't be able to digest chiral nutrients from regular organisms (sugars, lipids, nearly all amino acids, and more). Seems like that would limit the damage it could cause to existing organisms.
It's been 2 days, just posted it! Seems like a lot of people are calling it out as fake, but plenty of people are replying as if it's totally real. I think it may have been a bit over-the-top insane.
The odds of any specific child being killed in a school shooting is very low, but the incidence of shootings is still far higher in the US than any other country, and that's a big problem.
Only if you've got an OLED display, for LCDs you're using roughly the same energy as long as your display's backlight is on.