What is the true value of a honeybee? A mountain stream? A mangrove tree?  Gretchen Daily, cofounder and faculty director of the Stanford Natural Capital Project, has dedicated her career to answering such complex questions. Using emerging scientific data and the project’s innovative open-source software, Daily and her team help governments, international banks, and NGOs to not only quantify the value of nature, but also determine the benefits of conservation and ecosystem restoration. This ma...