Lisa Randall is a renowned particle physicist. Her latest work Dark matter and the dinosaurs : the astounding interconnectedness of the universe explores our cosmic environment.  She proposes that it was a comet dislodged from its orbit as the Solar System passed through a disk of dark matter embedded in the Milky Way that hit the earth and killed three-quarters of life on earth including the dinosaurs.  She weaves together the cosmos' history and our own, illuminating the deep relationships that are critical to our world.  Randall provides a fascinating look at our Universe, our galaxy, our Solar System and life and an insightful look into how scientists explore new concepts.   She is also author of Warped Passages and Knocking on Heaven's Door: how physics and scientific thinking illuminate the universe and the modern world both of which were New York Times bestsellers. This new work will most certainly follow suit.  An intriguing read for other professionals and an intriguing as well as clear and comprehensible read for lay persons with no scientific backgrouond.