so we picked the bushmen of the kalahari. >> there's only a few of them left in the world. >> so if youuy a book, you're helping the bushmen. >> reporter: the book is available online through amazon or at travelswithgannonandwyatt.com. >> i think they're going to have a good time reading it. it's a fun book to read. >> all in all it's an adventure book. so who doesn't love adventure, right? >> reporter: right. for "teen kids news," i'm lauren. >>> time to play guess the president. you get 4 clues and 20 seconds to check your knowledge of white house history. here goes. this president was an army captain in world war i. then he opened a men's clothing store back home in missouri. he was franklin delano roosevelt's vice president. and he ended world war ii by deciding to drop atomic bombs on japan. harry s. truman, our 33rd president. famous for saying "the buck stops here." that means he took the blame and the credit for his administration. >>> hey, sports is next. so don't go away. >>> something men have to worry about is losing their hair someday. but thousands of guys around the world