Translation of "noxius" into English

Ventum ad extrema, ni resipiscere incipiant et noxii capitis poena paenitentiam fateantur.

"We are at the last extremity, unless we think of repenting, and avow our repentance by punishing the guilty."""

Optandum est ut communitas internationalis et singulae publicae auctoritates efficaciter obsistere sciant ne naturae utendae formae noxiae sint.

Let us hope that the international community and individual governments will succeed in countering harmful ways of treating the environment.