Las Nubes - the clouds - is a rainforest in Costa Rica which has generously been donated to York University by Dr. Woody Fisher, a prominent Toronto physician, medical researcher and co-founder of the Canadian Liver Foundation. York University's Faculty of Environmental Studies created the Dr. Woody Fisher Fund for Neotropical Conservation to protect this rainforest habitat through an agreement with Costa Rica's Tropical Science Center.

The Faculty of Environmental Studies is a leading center in Canada for research on environmental and development issues.

The Tropical Science Center, established in 1962, is one of the pre-eminent ecological research and conservation institutions in the Neotropics. The TSC has pioneered the "protected areas" movement in Latin America through the creation of the Monteverde Cloud Forest Preserve.