families filled with all kind of adultery, petty behavior. gregg: there's good stuff in there. >> even beastiality and there was a lot of heavy drinking. gregg: puritans drinking? >> water was not clean and it was not considered safe and it was unsafe. gregg: you know, so far what i've read has been truly amazing and thank you for sharing it with us and being here today. we appreciate it. the name of the book is "for adam's sake." thanks very much. >> thank you so much. gregg: thank you. jenna: what do you think of that excuse next time you want a beer? gregg: the water is no good. jenna: i like it. and it was probably legitimate at that time. well, it's a battle of the mammal minds. elephants used to be considered the brainy ones and turns out another creature may be the memory master. what scientists say next.