Do we still need zoos?

<p>The London Zoo will open a hospital where people can watch vets treat animals — from checkups to post-mortems. Zoo consultant Sarah Spooner says that kind of public engagement helps boost conservation and helps zoos stay relevant. But environmental author Emma Marris says zoos can't justify the harm they do to animals and we've outgrown them, even if we don't realize it yet.</p><p><br></p>