Assoc Prof Sierin Lim  is a BioEngineer  at the  NTU institute of Health Technologies, and Lecturer. Bioengineering is a  broad field  which includes Genetic engineering, Design of medical devices,  Tissue engineering for organs , Biopharma, Ecological engineering  and other areas that improve the living standards of societies.   Grace and Lena explore Prof Sierin's insights into  BioEngineering for  healthcare, water desalination and food.