>> two different parenting tactics. coming up, the latest exercise craze. working out on a trampoline. is this effective or just a gimmick. either way you look at it, it looks like fun to me. it's our try-day friday. in our next half hour, some intense high-speed moments caught on tape. bikers facing off with highway police. it's happening more and more often. we take a look at an alarming trend. you're watching "world news born from 1945 through 1965