Three MIT designers – Mitchell Joachim, Lara Greden and Javier Arbona – created a concept of a living tree house which nourishes its inhabitants and merges with its environment.[79] The project of Fab Tree Hab is expected to take a minimum of five years to grow the home.[80] The plans are for the interior to be lined with clay and plastered to keep the weather outside and to look normal. The exterior is to be all natural.[80]