(written from a Production point of view)
Adam Harrington is the actor who played a Human researcher in the Star Trek: Enterprise second season episode "Regeneration". He filmed his scenes in early March 2003 and his arctic gear outfit was later sold off on the It's A Wrap! sale and auction on eBay. 
Harrington had walk-on roles on such television series as J.J. Abrams' Felicity, UPN's Kevin Hill, NBC's Heroes, and Dirt (2007, with Jeffrey Nordling). He also had featured roles in the films Torque (2004) and Partners (2005), with the latter co-starring the likes of Sean McGowan and Saul Rubinek.