The longtime chief of the San Francisco Zoo and Gardens announced her retirement this week, just days after Mayor Daniel ...

The longtime chief of the San Francisco Zoo & Gardens announced her retirement last night, just days after Mayor Daniel Lurie ...

The longtime chief of the San Francisco Zoo & Gardens announced her retirement Tuesday night, just days after Mayor Daniel ...

Tanya Peterson, the San Francisco Zoo's longtime CEO, has resigned following controversies that raised questions about her ...

One notable success story is the cloning of Przewalski's horses, once extinct in the wild. Kurt, the first cloned ...

A frozen zoo is an extensive collection of living cell lines preserved for valuable conservation, research, and future use.