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.

Biology

Thermoregulation strategies in desert-dwelling mammals

Quick fact

Some desert mammals, like the kangaroo rat, can survive without ever drinking water, extracting all moisture from their food and producing highly concentrated urine to conserve every drop.

Why this is interesting

On a scorching desert afternoon, most mammals seem to vanish. Where do they go, and how do they survive the deadly heat?