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.

Environmental Science

How Invasive Carp Alter Nutrient Cycling in Shallow Lakes

Quick fact

Invasive carp can increase water column phosphorus concentrations by up to 100% in shallow lakes, directly fueling harmful algal blooms and degrading water clarity.

Why this is interesting

You've probably seen a clear lake turn murky green almost overnight. But what if the cause wasn't a factory or farm, but a fish?