![PBS NewsHour - Segments show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/082/426/small/pbs-newshour-segments.png)
Summary: In our NewsHour Shares moment of the day, this self-taught paleontologist has been looking for dinosaurs in creek beds and rivers for more than 30 years, and has become something of a legend in the field. Then, outside a NASA building, he hit the jackpot: over 100 tracks belonging to numerous mammals, dinosaurs and flying reptiles.