Discussion pages are an important resource on contentious topics.

The relationship between violent acts and schizophrenia is a contentious topic.

The consumption of alcoholic beverages has been a contentious topic in America since the colonial period.

The origin of birds has historically been a contentious topic within evolutionary biology.

Just how many they share is a contentious topic in human biology.

Health care is a contentious topic these days, but one thing's indisputable: It grows jobs.

Nuclear energy is a sober topic, often contentious, and it suffers from a bad press.

A panel that ended the general session tackled the contentious topic of effective agency building.

Genetically modified food is a contentious topic in Africa right now.

Contraception was no longer a contentious topic between them.