Unwritten Rules and Robots by Tom Lichtenberg

Three Short Novels

Renegade Robot:
It's the end of the world as we know it, when the dreaded Singularity finally occurs and happens to be captured, live on tape, by agents of the Frantic News Network, which freaks out, as usual, and causes a lot of trouble for the mild-mannered nanobot exterminator who happens to get caught in the crossfire

Unwritten Rules of Impossible Things:
What if someone - or something - stole one of your days? Just one, and you didn't know why, or what they had done with your life in that time? Young Philip Galvez and his friend Marcus Holmes found out for themselves when they decided to discover why there was a giant stuffed moose in a house down the road.

The New Guy in Moon Base Twelve:
They weren't exactly the crew the President had in mind when he announced his plan to build a permanent base on the moon so the Chinese wouldn't do it first, but there they were, a boring collection of peaceful, happy settlers who couldn't even get a decent reality TV show rating. Life was perfectly dull until the new guy arrived. Now if they could only find out who he was and where he'd come from.