The use of marijuana by senior citizens in states where it is legal; musician Marc Anthony; Northwest Angle, Minn.; Rev. Schenck, a pro-life advocate who also supports strict gun control; a man who has walk almost every street in New York's boroughs.

A man's journey after waking from a coma; comic Fred Newman; tree climbing goats help create argan oil in Morocco; TV host Rachel Maddow; National Geographic Bee competitors.