scott butman has details. >> reporter: you already know go pro cameras. they're everywhere -- on kids' toys, recording way we get around. now cameras are going from extreme sports to limpic racing. >> because we measure what athletes do, you can go after the ct performance frame by frame. >> they use go pros underwater. >> they're proving strokes on land and under the water. >> all these olympic athletes are putting in hour of work and being able to scrub through >> with angles and angles, go pro is change how people train. >> they're doing sports analysis and helping athletes perform and improve their performance. >> one stroke at a time. >>> it appears methane comes from production. nasa identified more than 200 methane in the four corners region. as much as 2/3 could be spewing from 25 locatings. >>> a giant snake on the loose. who would like to get that 911 call? some police officers in dartmouth, massachusetts, found a 5-foot surprise in the middle they're not poisonous but bite. officials believe the owner released it because it got too big -- not a