Watch Tom Jones leave Crosby, Stills, Nash & Young in awe during an unearthed 1969 duet

In 1997, ecologists Daniel Janzen and Winnie Hallwachs approached an orange juice company in Costa Rica with an off-the-wall idea. In exchange for donating a portion of unspoiled, forested land to the Área de Conservación Guanacaste — a nature preserve in the country’s northwest — the park…