Submarine sonar measurements indicate that ice thickness has decreased by 4 feet over the last 40 years. Satellite measurements indicate that the area of ice cover has decreased by 7% per decade over the last 30 years.
This film, which had its world premiere at last month's Sundance
Film Festival, weaves the science behind the issue of global
warming with the former vice president's personal history and
longtime commitment to...
created by digitalfog | 7 years ago | updated 7 years ago 601 views | 0 recommendations | 0 comments