A week ago I went to a talk by Robert Zubrin about his Mars Direct Plan. It was a great talk and I wanted to look at the powerpoint slides again after the talk. So I searched in google something like: robert zubrin presentation and as expected I didn’t find any results. But this week I started reading the book Google Hacks and after 20 pages into it I tried searching for the slides again by typing: “mars direct” “robert zubrin” filetype:ppt. This time I got four sites and the slides were in the third site! And that was just reading 20 pages of this book. I highly recommend it.
