An ectopic pregnancy can be life threatening to a woman when the embryo implants onto locations outside the uterine cavity. That's because the tissue in these areas can't stretch like the uterus and if the embryo implants into the vascular supply, blood vessels can start bleeding, Kickham said.
Publication was timed to coincide with the tenth anniversary of the Columbine High School massacre, which occurred on April 20. The book spent eight weeks on The New York Times bestseller list in the spring of 2009, peaking at #3.
In recent months, America has witnessed a wave of shootings at its high schools. Each new eruption of violence brings comparisons to another murderous rampage - at Columbine High School in Jefferson County, Colorado. It's been two years since Columbine, and today, many people - especially some parents of the murdered children - still believe the worst school massacre in American history might have been averted if the Sheriff's Department and school authorities had done their jobs.