21 Grams

21 Grams is a 2003 American drama film directed by Mexican director Alejandro Gonzlez Irritu from a screenplay written by Guillermo Arriaga. It stars Sean Penn, Naomi Watts, Charlotte Gainsbourg, Danny Huston and Benicio Del Toro.

The title refers to the early 20thcentury research of physician Dr. Duncan MacDougall who attempted to show scientific proof of the existence of the immortal human soul by recording a loss of body weight representing the departure of the soul immediately following death. The research by MacDougall attempted to follow the scientific method and showed some variance in results threefourths of an ounce, which has since been popularized asgrams is the reported weight loss from the death of the first subject. MacDougalls results were published in the peer reviewed journal American Medicine.The story is told in a nonlinear manner. The following is a linear, chronological summary of the plot ........

Source: Wikipedia