subjunctive when in a dependent clause followed by subjunctive?

Question

For example: Es una lástima que contaminemos el medio ambiente mientras hacemos cosas regulares todos los días.

Would the verb following "mientras" be indicative or subjunctive? This would be normally in the indicative, but would it be subjunctive since it is part of a subjunctive phrase?

Answer 1

Estoy de acuerdo. La claúsula dependente "mientras...." no requiere el subjuntivo porque no es parte de de la claúsula principal que lo requiere.

Answer 2

No, the subjunctive is not needed. You are just adding facts to backup your subjunctive statement.