generation of kids with damaged brains. and many fear something else. >> i never really told myself i needed help. >> a generation of marijuana addicts. when we come back, the truth and the science behind what's being called a growing epidemic. and, later, charlotte's story. one of the youngest children to try marijuana in colorado. narrator: these are the skater kid: whoa narrator: that got torture tested by teenagers and cried out for help. from the surprised designers. who came to the rescue with a brilliant fix male designer: i love it narrator: which created thousands of new customers for the tennis shoes that got torture tested by teenagers. the internet of everything is changing manufacturing. is your network ready?