The Mammoth Book of Science Fiction

The art of writing great science fiction is that it challenges the imagination, pushing it to extreme limits and in this anthology, selecting some of the best modern science fiction from the last fifty years, twenty leading authors of the genre ask the question 'What if...?' and then give their own very personal views of the changes and surprises which may befall humanity in the centuries to come. In Ulla, Ulla Eric Brown recounts the first manned Martian expedition and discovers that H. G....