This is a great website if you want to know about what diet is right for humans.  I have been listening for several months to over a year.  Angelo Coppola is the author of the web site and he has a podcast called latest in paleo.  He actually currently follows a plant-based paleo diet. He has great speakers on his podcast and uses a lot of research based articles.  He attempts to look at both sides of issue and I feel he does a really good job.