Al Gore in the documentary "An Inconvenient Truth." "There is no controversy about these facts," he says in the film. "Out of 925 recent articles in peer-review scientific journals about global warming, there was no disagreement. Zero."
He stands next to a big vast screen, to face audience. The documentary is based on a speech he has been developing for six years, and is supported by dramatic visuals. He shows the famous photograph "Earthrise," taken from space by the first American astronauts. Then he shows a series of later space photographs, clearly indicating that glaciers and lakes are shrinking, snows are melting, shorelines are retreating.
He provides statistics: The 10 warmest years in history were in the last 14 years. Last year South America faced first hurricane. Japan and the Pacific are setting records for typhoons. There are changes in the Gulf Stream and the jet stream. Cores of polar ice show that carbon dioxide is much, much higher than ever before in a quarter of a million years. It was once thought that such things went in cycles. Gore stands in front of a graph showing the ups and downs of carbon dioxide over the centuries. Yes, there is a cyclical pattern. Then, in recent years, the graph turns up and keeps going up, higher and higher, off the chart.
The primary man-made cause of global warming is the burning of fossil fuels. We are taking energy stored over hundreds of millions of years in the form of coal, gas and oil, and releasing it suddenly. This causes global warming, and there is a pass-along effect. Since glaciers and snow reflect sunlight but sea water absorbs it, the more the ice melts, the more of the sun's energy is retained by the sea.
"The world won't 'end' in 10 years," Gore says. "But a point will have been passed, and there will be an irreversible slide into destruction."
He stands next to a big vast screen, to face audience. The documentary is based on a speech he has been developing for six years, and is supported by dramatic visuals. He shows the famous photograph "Earthrise," taken from space by the first American astronauts. Then he shows a series of later space photographs, clearly indicating that glaciers and lakes are shrinking, snows are melting, shorelines are retreating.
He provides statistics: The 10 warmest years in history were in the last 14 years. Last year South America faced first hurricane. Japan and the Pacific are setting records for typhoons. There are changes in the Gulf Stream and the jet stream. Cores of polar ice show that carbon dioxide is much, much higher than ever before in a quarter of a million years. It was once thought that such things went in cycles. Gore stands in front of a graph showing the ups and downs of carbon dioxide over the centuries. Yes, there is a cyclical pattern. Then, in recent years, the graph turns up and keeps going up, higher and higher, off the chart.
The primary man-made cause of global warming is the burning of fossil fuels. We are taking energy stored over hundreds of millions of years in the form of coal, gas and oil, and releasing it suddenly. This causes global warming, and there is a pass-along effect. Since glaciers and snow reflect sunlight but sea water absorbs it, the more the ice melts, the more of the sun's energy is retained by the sea.
"The world won't 'end' in 10 years," Gore says. "But a point will have been passed, and there will be an irreversible slide into destruction."
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