Orange is the New Green: How Orange Peels Revived a Costa Rican Forest

Tuesday, Aug 22, 2017
by B. Rose Kelly, Woodrow Wilson School of Public and International Affairs

In the mid-1990s, 1,000 truckloads of orange peels and orange pulp were purposefully unloaded onto a barren pasture in a Costa Rican national park. Today, that area is covered in lush, vine-laden forest.

A team led by Princeton University researchers surveyed the land 16 years after the orange peels were deposited. They found a 176 percent increase in aboveground biomass — or the wood in the trees — within the 3-hectare area (7 acres) studied. Their results are published in the journal Restoration Ecology.  Learn more about "Reviving a Forest."