You might want to snag this (http://www.amazon.com/Time-Ships-Stephen-Baxter/dp/0061056480/ref=sr_1_1?s=books&ie=UTF8&qid=1296132142&sr=1-1) so you will have it ready to dive right into after finishing The Time Machine. It's a sequel (and one of the few Stephen Baxter novels where most or all sentient life isn't extinguished by the end of the book).