Even 24 hours at 99 degrees F can be enough to start killing the adorable little critters. More so than any other animal on Earth, the water bear (aka tardigrade, aka moss piglet) doesn’t particularly appreciate dying . Scientists have exposed the microscopic critters, which look like eight-legged gummy bears, to insane conditions—they’ve boiled them, frozen them, irradiated them, exposed them to the vacuum of space (rocket scientists recently crashed them into the moon […]