day. >> book tv is on twitter. follow us for publishing news, scheduling updates author information, and to information, and to talk directly with authors during a live programs'. twitter .com/book tv. >> here is a look at a look at some of the best-selling nonfiction books according to barnes & noble. 's

's. >> this weekend book tv is live on in-depth with the best-selling author of investigative journalist has written several books on the practices of the cia fbi, and secret service as well as the lives of prominent political figures. cornell west looks at the radical politics of martin luther king jr. domestic and international affairs command revisits

also, oklahoma, to take a look at the history of the literary sites and talk to authors.

>> we don't talk as much here because we do advocate that everything your body does not always have a difference. you know there are headed toxins. from the research we have done me is not that great for you. everything else that is an additive. and then it also comes in terms of sustainability. one of the things that we need to think about is that even if people switched over, what over, what would that look like as a food system? people do need to in general, i mean just mean just switching over is not

the answer to the problem but informing people that they need to actually eat healthier because you will have the same type of our mental problems. raising cattle is a huge astronomical undertaking for our environment in the amount of water that they use. it is really a massive amount of water. there are varying statistics for how much it takes. but i know for grain fed it can take up to about 5,000 gallons of water for a pound of beef. ..

you can look towards better sources but generally advocate people to really start to cut down on meat in their diet. >> gun control activist and author sarah brady died yesterday at the age of 73. ms. brady was the wife of former white house press secretary james brady who was injured in the assassination attempt on president reagan in 1981. sarah brady served as chairperson of the brady center to prevent gun violence and advocated for the brady handgun violence protection act signed into law and 1993. she was on c-span several times including an appearance in 2002 on booknotes for her book, "a good fight.