What key details about steven kokelj can be extracted from the following bio? Bio: steven kokelj is a canadian environmental scientist . meagan wohlberg , writing in the '' northern journal '' , called him nwt 's foremost expert on permafrost . kokelj 's phd thesis , published in 2003 , was entitled , '' '' near-surface ground ice in sediments of the mackenzie delta region , northwest territories '' '' . since then kokelj has held several research positions in the northwest territories . in 2014 kokelj was the very first speaker invited to lead off a series of talks on northern issues , hosted in nwt 's legislative assembly . the talks were modeled after the ted conferences , and the legislature has made them available via podcast .
The answer to this question is:
- known for is leading expert on permafrost- name is steven kokelj- nationality is canada- occupation is environmental scientist