I'm not sure all heavy metals are toxic, but most are. Some may be present as insoluble compounds, or otherwhise hard to get into an organism, but that's a side aspect. For example, I would count ...
I'm currently planning out an RPG based on Misfits. Basically young offenders get super powers. I want one of the villains to have a really lame power that they use to become incredibly dangerous. I ...
How many Botulinum toxin molecules or grams are contained in one medical unit of Botox?