London : The famous physics professor Stephen is Hawking has warned that mankind facing the dangerous time its history today. He said that the world today is facing huge challenges like climate change, overpopulation, epidemic diseases. *We have the technology to destroy the planet on which we live and have not yet developed the ability to escape it. Perhaps in a few hundred years from now, we will have built colonies amid the stars, but right now, we have only one planet and we need to work together to protect it.' Hawking wrote recently in the Guardian newspaper. of Hawkin most in 4. 3. W you believe is the (a) climate change (b) overpopulation (c) epidemic diseases Discuss this in groups of four or five using your mother tongue and English. Discuss the following statements with the help of your teacher. (a) We have the technology to destroy the planet on which we live. We will have built colonies amid the stars. (b) (c) Right now, we have only one planet.
