The future of zoos

Society has come a long way in animal welfare. But we still are caught trying to balance the needs of humanity and the needs of the animal. Zoos are one example.

How do we balance conservation (needed due to the effects of human activities), education, and animal welfare?

Certainly, large carnivores always seem to suffer.

Link: Tiger escapes pen, kills visitor at San Francisco Zoo – The Boston Globe:

A tiger escaped from its pen at the San Francisco Zoo yesterday evening, killing one visitor and injuring two others before police shot it dead, authorities said.