The Brookings Institution is like a big group of really smart grown-ups who work together to study and figure out important things about our country and the world. They look at things like how the government works, what problems people are facing, and how we can fix those problems.
They write reports and books that explain their ideas and share them with other grown-ups who work in government, business, and other important places. Sometimes, they even talk to real-life grown-ups like the president or Congress to share their ideas and try to help make things better for everyone.