Iain Stewart is the "new boy" on his first Rough Science mission. Back home, he's a Senior Lecturer in the Department of Geology at the University of Plymouth. He graduated in 1986 with a degree in Geology & Geography from Strathclyde University in Glasgow and moved to the University of Bristol to carry out doctoral research on the geology of earthquakes in Greece and Turkey.

After finishing his PhD in 1990, Iain lectured in geology at Brunel University in west London, then left in 2002 to take up an Honorary Research Fellow post at Glasgow University while working on the BBC Four series Journeys to the Centre of the Earth.

His main research interests are in the broad area of Earth hazards and natural disasters, particularly in terms of identifying past major earthquakes, tsunamis and volcanic eruptions in the Mediterranean region. Iain's geological research has been featured in two BBC Horizon specials: The Search of Ancient Helike and Earthquake Storms.

Read how Iain approached each of the challenges:

   Rover
   Communication
   Spacesuit
   Impact
   Aerial Surveyor
   Rocket