1.Science fiction novels and movies tend to have a dark, despairing side. Why do you think this is so? What motivates writers to express a sense of loss, rather than excitement about the possibilities...

1.Science fiction novels and movies tend to have a dark, despairing side. Why do you think this is so? What motivates writers to express a sense of loss, rather than excitement about the possibilities of the future?

2. How would you redefine “green chemistry” so that it would be “sustainable chemistry”?