Looking for Earth-like planets

The astronomers from the University of Arizona believe that there may be hundreds of undiscovered worlds in outer part of our Solar System.Last week in a meeting of American Association for the Advancement of Science in Boston, Alan Stern from NASA said,
“I believe Other Earth –like planets might contain life and allow human colonies to be set on them. “
We are in search of new worlds,We are doing our best to alter the world where we live by dynamiting the mountains,manipulating the weather by cloud seeding,placing satellite with dangerous chemicals in the space and then shooting them down with missiles,every day dropping tons of bombs on Earth and are ruthlessly busy in the process of deforesting.
We are dumping the waste in oceans,our sea-going robotic gliders and the robo –subs are voyaging in Antarctica’s depths on unknown missions.We are provoking hurricanes, storms and tsunamis.We are robbing the seas from their treasures.
We are drinking polluted water,consuming genetic manipulated food and breathing air full of chemicals.The birds, animals and human beings are suffering from incurable diseases.
We are in a trance situation of terror and delight,we are cruel,we are the victims and we are looking for new worlds to set new colonies.