Obaidur Rahaman, a native of India and a graduate of Indian Institute of Technology Bombay, obtained his PhD degree in computational chemistry from University of Delaware, USA. Obaidur lives in Weimar, Germany with his wife Darina and son Dimitar. When he is not in his office staring at the molecule on the computer screen, you might find him in the beautiful Ilm Park staring at the trees or at the fish in the river. You can email him at obaidur.rahaman345@gmail.com You can also follow him on facebook: https: //facebook.com/obaidur.rahaman.author