New Life for Old Cell Phones: The Denver Zoo is accepting unwanted cell phones which will be given to Eco-Cell for recycling or reuse. In exchange, Eco-Cell will pay the Denver Zoo up to $10 for each working digital cell phone. Working phones collected by the program will be refurbished and provided to low-income residents in Latin America or donated to women's shelters and senior citizen's groups for emergency 911 calls. All unusable cell phones, batteries, and accessories will be recycled under strict EPA guidelines by certified recyclers. To participate in the zoo's recycling program, bring your cell phones and accessories to a drop box located in the Guest Services office. Entry to the zoo is not required. You can also mail your cell phones in to: Denver Zoo; Attn: Answer the Call of the Wild; 2300 Steele Street; Denver, CO 80205.