yes and yes.click on the aricles on the home page under wildlife, its a topic thats been discussed many times here, so you you'll get some lengthy debates. in general, black bears are not dangerous, although they can be unpredictable. some advocate hanging their food, others like myself sleep with their food. you really dont have much to worry about. google bear attacks on the appalachian trail and you wont see too many results.
wear a hat.