conscientiser

Conscientiser means to raise someone's awareness of an issue, making them consciously aware of a social or political reality (conscientiser les jeunes aux enjeux climatiques). It's common in activism, education, and social-work contexts, and used somewhat more broadly in Québec French than in France.

• Cette campagne vise à conscientiser le public aux dangers du plastique. — This campaign aims to raise public awareness of the dangers of plastic.
• Les enseignants essaient de conscientiser les élèves à l'écologie. — Teachers try to raise students' awareness about ecology.
• Il faut se conscientiser avant de pouvoir agir. — You have to become aware before you can act.

Conscientiser is about raising deep, often political or social awareness, stronger than simply informer (to inform) — using it for a minor factual heads-up would sound comically overblown.