A review by mikiher
Dark Matter and the Dinosaurs: The Astounding Interconnectedness of the Universe by Lisa Randall

3.0

TL;DR - the theory is that there is a periodic cycle of large meteor hits on Earth of about 30 million years, and that this cycle is a result of the summer system passing through a disk of dark matter. There's as of now very little hard evidence for this, but it's a nice story, so let's write a book about it...
OK, it was a nice read, and explained concepts pretty clearly for laymen.