Tuesday, April 13, 2004

GLOBAL WARMING: Why Can't the Mainstream Press Get Even Basic Facts Right?

Some excerpts from a National Center article. See the full article for detailed references on each point made:


"The Associated Press ran a global warming story this past weekend that makes the following statements:


"Carbon dioxide, the gas largely blamed for global warming, has reached record-high levels in the atmosphere after growing at an accelerated pace in the past year..."

"Carbon dioxide, mostly from burning of coal, gasoline and other fossil fuels, traps heat that otherwise would radiate into space."

"Global temperatures increased by about 1 degree Fahrenheit (0.6 degrees Celsius) during the 20th century, and international panels of scientists sponsored by world governments have concluded that most of the warming probably was due to greenhouse gases."



Fact: Carbon dioxide is not the major greenhouse gas (water vapor is). Carbon dioxide accounts for less than ten percent of the greenhouse effect, as carbon dioxide's ability to absorb heat is quite limited. Only about 0.03 percent of the Earth's atmosphere consists of carbon dioxide (nitrogen, oxygen, and argon constitute about 78 percent, 20 percent, and 0.93 percent of the atmosphere, respectively). The sun, not a gas, is primarily to "blame" for global warming -- and plays a very key role in global temperature variations as well.

Fact: Most of the carbon dioxide in the atmosphere does not come from the burning of fossil fuels. Only about 14 percent of it does.

Fact: Most of 20th Century global warming occurred in the first few decades of that century, before the widespread burning of fossil fuels (and before 82 percent of the increase in atmospheric CO2 observed in the 20th Century).

If the AP is referring to the United Nations' Intergovernmental Panel on Climate Change, the AP should become aware that the IPCC report itself (the part written by scientists) reached no consensus on climate change. What did reach a conclusion was an IPCC "summary for policymakers" prepared by political appointees. Most reporters quote only the summary, being either too lazy or too undereducated to understand the actual report.

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