Gretchen Daily: the cost of not valuing nature

Traditional systems of wealth measurement don't include nature's contributions. Faculty Director of Stanford University's Natural Capital Project Professor Gretchen Daily thinks putting a dollar value on a mangrove, or a creek, or a honeybee is a vital paradigm shift. Gretchen and her team help governments, international banks, and NGOs determine their gross ecosystem product, or GEP - a parallel concept to GDP.