Related Clues:

• Otis says modification is to do with equilibrium in Earth's crust
• Single call for help to stay relaxed is a concern for the geologists looking for a crust
• I call for help and stay working for balanced state
• One getting letters of distress to stay away interests the geologist, whose crust is in the balance
• The gravitational equilibrium by which the earth’s crust “floats” over its mantle
• State of equilibrium between the earth’s crust and mantle
• One getting distress signal to stay away interests the geologist, whose crust is in the balance
• Is having nothing to do with lead scientist in lodge describing land movement - that's all about balance!