Here are some good reads I highly recommend
The Ten Trusts by Jane Goodall and Mark Bekoff
Crimes against nature by Robert F. Kennedy, Jr.
The Killers within: the deadly rise of drug resistant bacteria by Michael Shnayerson and Mark J. Plotkin
Listening to whales by Alexandra Morton
Animal Liberation by Peter Singer
The pleasures of eating by Wendell Berry
Hope's Edge by Frances Moore and Anna Lappe
Harvest for Hope by Jane Goodall
Nourishing Traditions by Sally Fallon
Just for starters, i'll add more as they come along to me!