node js return [Function] from controller file

This is my first program in MEAN Stack..

server.js

var api = require('./controllers/list_controller.js');
app.get('/', function(req, res){
console.log(api.list);
})

list_controller.js

     var Thread = require('../models/list_model.js');
    module.exports.list = function(req, res) {
      Thread.find(function(err, dt) {
        if(!err){
            res.send({data:dt})
        }else{
          return res.status(500).send("Error");
        }


  });
}

list_models.js

var mongoose = require('mongoose');


module.exports = mongoose.model('posts', {
id:Number,
author:String,
title:String,
body:String
});

i am not getting output..it returns [Funtion]...not data

listening on 3000
Connected to mongodb
[Function]

Can anyone give solution..

via lathika