Follow your curiosity

What discovery has been shared with you?

FACTREE gives you something interesting to discover every day — and something worth talking about together.

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

Technology

The Role of the Constitution in Judicial Review

Quick fact

The principle of judicial review is not explicitly stated in the U.S. Constitution—it was established by the Supreme Court itself in Marbury v. Madison (1803).

Why this is interesting

Ever wondered how a court can simply strike down a law passed by Parliament or Congress? The secret lies in a single document: the Constitution.