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.

Economics

Behavioral Economics in Public Policy Design

Quick fact

When countries switched pension enrollment from opt-in to automatic opt-out, participation rates soared from 50% to over 90% — without changing any financial incentives.

Why this is interesting

Have you ever kept a default app setting even when another option might be better? Why do these small design choices matter so much in public policy?