Elysa J. Hammond is the staff ecologist of Clif Bar Inc., a maker of all-natural energy and nutrition foods. In addition to her work at Clif Bar, Hammond is an honorary research associate at the New York Botanical Garden in the Bronx, N.Y., and a member of the Greenhouse Network, a grassroots movement working to stop global warming.

Elysa J. Hammond is the staff ecologist of Clif Bar Inc., a maker of all-natural energy and nutrition foods. In addition to her work at Clif Bar, Hammond is an honorary research associate at the New York Botanical Garden in the Bronx, N.Y., and a member of the Greenhouse Network, a grassroots movement working to stop global warming. She holds a Master of Forest Science from the Yale School of Forestry and Environmental Studies with a specialty in the ecology of food production systems.