Scorpions go terminator mode and reinforce their weapons with metal

One idea the team floats is that zinc and manganese are limited resources, so scorpions can only reinforce the most critical parts of the stingers instead of spreading the metals across their entire exoskeleton. Going deeper into the reasons behind what appears to be a design flaw in an otherwise neatly built stinger is one thing Campbell wants to focus on in the future. But the team thinks there’s more to learn. …