Five ways to save the world
Encyclopedia
Five Ways to Save the World is a British
documentary film on environmental issues related to climate change
, released in 2006. The film was made by Karen O'Connor
, for the big screen and was shot in the English language
to reach an international audience. It includes interviews with five environmental scientists and experts including Paul Crutzen, James Roger Angel
, John Latham
, Ian Jones
, and Klaus Lackner
.
The "five ways" proposed are geoengineering
techniques:
Since the first three methods do not remove carbon dioxide from the atmosphere, they would only reduce global warming
but not ocean acidification
. Since the last two methods would remove carbon dioxide, they could in theory reduce both global warming and ocean acidification.
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...
documentary film on environmental issues related to climate change
Climate change
Climate change is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in average weather conditions or the distribution of events around that average...
, released in 2006. The film was made by Karen O'Connor
Karen O'Connor
Karen Lende O'Connor is an American equestrian. She was born February 17, 1958. Her family includes Joanne and Phillip Lende and brothers Steven and Chip. She grew up in Bolton, Massachusetts....
, for the big screen and was shot in the English language
English language
English is a West Germanic language that arose in the Anglo-Saxon kingdoms of England and spread into what was to become south-east Scotland under the influence of the Anglian medieval kingdom of Northumbria...
to reach an international audience. It includes interviews with five environmental scientists and experts including Paul Crutzen, James Roger Angel
James Angel
James Roger Prior Angel is an American astronomer, and is Regents Professor and Professor of Astronomy and Optical Sciences at the University of Arizona....
, John Latham
John Latham
John Latham may refer to:* John Latham , British physician, naturalist and author* John Latham English physician, President of the Royal College of Physicians...
, Ian Jones
Ian Jones
Ian Jones may refer to:*Ian Jones , Australian author and film writer*Ian Jones , New-Zealand rugby player*Ian Jones , British bronze medal winner at the 2008 Summer Paralympics...
, and Klaus Lackner
Klaus Lackner
Klaus Lackner is a professor in the Department of Earth and Environmental Engineering at Columbia University and co-founder of in Tucson, AZ. Lackner pioneered the concept of carbon dioxide air capture as a means for climate change mitigation, i.e. abating emissions of greenhouse gases into the...
.
The "five ways" proposed are geoengineering
Geoengineering
The concept of Geoengineering refers to the deliberate large-scale engineering and manipulation of the planetary environment to combat or counteract anthropogenic changes in atmospheric chemistry The Intergovernmental Panel on Climate Change concluded in 2007 that geoengineering options, such...
techniques:
- space lenses in orbit, to diffract sunlight away from the earth
- cloud seeding with seawater to increase albedoAlbedoAlbedo , or reflection coefficient, is the diffuse reflectivity or reflecting power of a surface. It is defined as the ratio of reflected radiation from the surface to incident radiation upon it...
- sulfur launched into the stratosphere to increase albedoAlbedoAlbedo , or reflection coefficient, is the diffuse reflectivity or reflecting power of a surface. It is defined as the ratio of reflected radiation from the surface to incident radiation upon it...
- ocean fertilization with iron or ureaUreaUrea or carbamide is an organic compound with the chemical formula CO2. The molecule has two —NH2 groups joined by a carbonyl functional group....
(nitrogen fertilizer) - artificial trees (see carbon capture and sequestration)
Since the first three methods do not remove carbon dioxide from the atmosphere, they would only reduce global warming
Global warming
Global warming refers to the rising average temperature of Earth's atmosphere and oceans and its projected continuation. In the last 100 years, Earth's average surface temperature increased by about with about two thirds of the increase occurring over just the last three decades...
but not ocean acidification
Ocean acidification
Ocean acidification is the name given to the ongoing decrease in the pH and increase in acidity of the Earth's oceans, caused by the uptake of anthropogenic carbon dioxide from the atmosphere....
. Since the last two methods would remove carbon dioxide, they could in theory reduce both global warming and ocean acidification.