LARAMIE, Wyoming, Dec. 3 -- The University of Wyoming issued the following news release: This series of four images shows UW Assistant Professor Randy Haas successfully using an atlatl while carrying his son, Hank, on his back. The lower image shows the atlatl and dart Haas used during the study. (Randy Haas Photo) Earlier this fall, a headline on Cowboy State Daily captured the attention of many: "Wyoming Bowhunter Bags Big Buck With Napping Toddler On His Back." The unusual event garnered  more PR