Indica and sativa are the two main types of cannabis. Cannabis is one of the oldest crops known to mankind, with records of its cultivation dating back thousands of years. Today, it is widely accepted that marijuana has two different species: Cannabis indica and Cannabis sativa.ndica and sativa are the two main types of cannabis. Cannabis is one of the oldest crops known to mankind, with records of its cultivation dating back thousands of years. Today, it is widely accepted that marijuana has two different species: Cannabis indica and Cannabis sativa.
That would make medical errors the third-leading cause of death in America, behind heart disease, which is the first, and cancer, which is second. The new estimates were developed by John T. James, a toxicologist at NASA 's space center in Houston who runs an advocacy organization called Patient Safety America.
Suicide surpassed war as the military's leading cause of death. War was the leading cause of death in the military nearly every year between 2004 and 2011 until suicides became the top means of dying for troops in 2012 and 2013, according to a bar chart published this week in a monthly Pentagon medical statistical analysis journal.