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In March 2007 the UK’s Channel 4 broadcast a biting documentary, The Great Global Warming Swindle. It debunked most of the major arguments of Al Gore’s Oscar-winning video, An Inconvenient Truth.

The Chinese word for crisis is a combination of the two ideograms Wei, which means "danger" and Ji, which means "opportunity."

In the past several months, a new "crisis" has heated up the controversy over man-made global warming.

A few major-media writers and TV personalities are actually reporting statements by credible scientists who are challenging the assumption that carbon dioxide is the primary force causing global warming.

There's a real possibility that big-name journalists will break ranks and pursue their next Pulitzer Prize by exposing the lack of scientific consensus on CO2 as a planet-heating pollutant.

That would create a crisis of confidence among the activists, researchers and global-governance apparatchiks who want a global carbon tax to build their political and financial power base.

As an agricultural journalist, I find this a fascinating new development in the climate controversy. I've studied weather and climate for more than 50 years. In the early 1970s, I wrote a short book, Tomorrow's Wild Weather, which warned what could happen if there was a long-term continuation of the cooling trends in the mid-latitudes since the 1930s.

As climatologist Reid Bryson advised me at the time, a cooler climate in temperate zones would have been serious for world agriculture: Westerly winds would intensify, making U.S. weather more extreme. Africa's Sahel desert would expand much farther southward, spreading famine across northern Africa. The data looked ominous: Average temperature in the 48 U.S. states had fallen by more than six-tenths of a degree Celsius since 1930.

This cooling attracted widespread press coverage and even some political pressure-to reduce "aerosols" or fine particles of pollutants which must be making our atmosphere more opaque. But the "New Ice Age" scare faded as more refined data emerged and the longer-term, slow recovery from the Little Ice Age resumed.

I've continued to follow the climate controversy, especially since the 1997 UN Framework Convention on Climate Change. Since that conference, billions of dollars in government funding have generated floods of research data, a myriad of computer models, political posturing and the Kyoto Protocol.

The New Data

Most of that data is freely available to scientists and others on the Internet. Using it, hundreds of highly qualified climatologists and other scientists outside the fraternal network of the UN Intergovernmental Panel on Climate Change have challenged climate prediction models and other assumptions of the IPCC's reports. While there's consensus that climates change over time, climatologists are sharply divided over the interactions of the many potential causes. As research emerges, CO2 as a primary warming force becomes harder to defend with hard data.

These challenges are starting to fracture the UN's pretext for global governance over carbon emissions-including imposition of carbon taxes and "carbon credit" trading supervised by UN agencies. Giving the UN a legal right to impose a carbon tax- "cap and trade" in UNspeak-would provide an income stream to UN agencies which would greatly increase political power of UN bureaucracies. And their track record with large amounts of money, such as the Iraqi Oil for Food program, is not encouraging.

However, if the scientific case for CO2 as a primary climate pollutant crumbles, so could a global carbon tax.

Individual climatologists have disputed conclusions of the UN Intergovernmental Panel on Climate Change even before the first IPCC Assessment Report in 1990. The IPCC has issued a series of reports, each focusing on CO2 as the primary "greenhouse gas" causing the continuing warming recovery since the Little Ice Age.

One of the first organized scientific counterattacks sounded on April 6, 2006. Sixty accredited experts in climate and related scientific disciplines signed a letter to Canadian Prime Minister Stephen Harper, urging that billions of Canadian tax dollars appropriated to implement the Kyoto Protocol on climate change "will be squandered without a proper assessment of recent developments in climate science."

They wrote that if today's extensive climate knowledge and measuring capabilities had existed in the mid-1990s, the Kyoto treaty "would almost certainly not exist, because we would have concluded it was not necessary."

That scientific challenge received little prime-time media attention. The Canadian government's administration and legislature mostly ignored it.

Film Exposes Gore's Deceptions

Then, in March 2007, the UK's Channel 4 broadcast a biting documentary, The Great Global Warming Swindle. It debunked most of the major arguments of Al Gore's Oscar-winning video, An Inconvenient Truth. For example, the Antarctic ice core data dramatized in Gore's show actually reveal that increases in CO2 have generally followed increases in temperature. The lag is typically on the order of 800 years.

The Swindle documentary roused furor and scorn among carbon-as-cause believers, who attacked Channel 4 as offering a "great propaganda gift" to "climate-change deniers." But the credibility and rationale of scientific sources on the documentary endured the attacks. No factual challenges were forthcoming against the scientists' arguments.

The controversy over this TV show, the first journalistic challenge against CO2 as primary world thermostat, may have encouraged others in the scientific community to point out that despite roughly $50 billion for climate-change research over several decades, the case against carbon dioxide faces more uncertainty as the evidence grows, not less.

One such challenge comes from Dr. Bob Carter, Research Professor at James Cook University and paleoclimate analyst with more than 30 years' experience, including 95 research papers.

In an Accuracy in Media guest column in April 2007, Carter emphasized: "The evidence for dangerous global warming forced by human carbon dioxide emissions is extremely weak. That the satellite temperature record shows no substantial warming since 1978, and that even the ground-based thermometer statistic records no warming since 1998, indicates that a key line of circumstantial evidence for human-caused change-the parallel rise in the late 20th century of both atmospheric carbon dioxide and surface temperatures-is now negated."

This challenge and others from eminent scientists roused the carbon theorists to their ramparts. On the website www.realclimate.org, Gavin Scmidt and Stefan Rahmstorf presented a 1980-2006 chart of global temperature showing that the trend of deviation from "normal" in that 26-year period remains up. But they made no attempt to explain why shorter-term deviations vary more widely than the longer-term anomaly, which puts the globe at about 0.4 degrees Celsius above its long-term "normal" using the GISTEMP Land-Ocean Index computed by the Goddard Institute for Space Studies.

Throughout 2007, hundreds of highly qualified climate scientists individually challenged the presumption that global regulators can, and must, manage the world's thermostat by curbing 50% - and possible eventually 100%-of man-made carbon dioxide emissions.

Continuing Debate

The most lively media arena for the CO2 emissions controversy the past two years has been, by far, among Internet websites and blogs. The Science and Public Policy Institute (http://scienceandpublicpolicy.org) offers a wide-ranging forum on the science of climate change.

Websites like the SPPI bypass major-media gatekeepers and the UN organizers, who carefully monitor any non-governmental organization wishing to attend an IPCC climate conference. Example: At the November 2000 Conference of the Parties (COP6) climate parley in the Hague, Netherlands, the only non-governmental organization to oppose the Kyoto Protocol was Sovereignty International (www.sovereignty.net).

The websites provide newspaper, radio and TV reporters a rich diversity of data and analysis on the issue. Usually, any posted article contains an opportunity for immediate rebuttal. These websites may embolden scientists to speak out more frequently in a forum unconstrained by peer review.

The volume of new climate data is accelerating, which means that media-amplified claims like the linkage between climate warming and hurricanes can be challenged more quickly. For instance, the SPPI site points out 35 factual errors in Al Gore's documentary, "An Inconvenient Truth."

On Dec. 20 2007, the biggest-yet assembly of scientists challenging the Kyoto pretext of CO2-as-villain was posted by Marc Morano on the minority page of the U.S. Senate Committee on Environment and Public Works. This extensive digging by Sen. James Inhofe's staff summarized comments from over 400 prominent scientists who disputed some aspect of man-made global warming in 2007. These scientists' observations fill some 120 pages when printed out from the website. But they hardly made a ripple on prime-time TV news.

This Senate site says, in part: "Over 400 prominent scientists from more than two dozen countries recently voiced significant objections to major aspects of the so-called "consensus" on man-made global warming. These scientists, many of whom are current and former participants in the UN IPCC (Intergovernmental Panel on Climate Change), criticized the climate claims made by the UN IPCC and former Vice President Al Gore."

Sen. Inhofe's staff observes, "Even some in the establishment media now appear to be taking notice of the growing number of skeptical scientists. In October, Washington Post Staff Writer Juliet Eilperin conceded the obvious, writing that climate skeptics "appear to be expanding rather than shrinking."

A Contrary View

But on the first day of 2008, a very significant contrarian voice emerged in an astonishing place: The New York Times.

Science writer John Tierney's editorial slashed deep:

"Today's interpreters of the weather are what social scientists call availability entrepreneurs: the activists, journalists and publicity-savvy scientists who selectively monitor the globe looking for newsworthy evidence of a new form of sinfulness, burning fossil fuels."

As a long-time journalist myself, I saw a larger significance in Tierney's op-ed piece, which point out that when it comes to covering climate change, only politically-correct news avoids the spike.

Here's that significance which my journalistic instinct perceives: Tierney's courageous analysis implies that the command center of CO2 orthodoxy, the New York Times itself, will allow any journalist to reveal the rips in the CO2 emperor's clothes.

The Questions

The Pulitzer Prize of 2010 just might go to the contrarian newsperson who challenges climate scientists and carbon-tax advocates with questions like these:

1. Why don't advocates of restricting and burying CO2 ever mention opportunities of longer growing seasons and higher CO2 availability for crops?

Agronomic research shows that doubling atmospheric CO2 levels to about 700 parts per million raises corn and soybean yields 20% to 40%. We see more opportunity in using CO2 for higher crop yields than in burying it under the sea floor. Greenhouses commonly enrich their atmospheres with carbon dioxide.

Historically, advances in civilizations have accompanied warmer, wetter epochs in climate cycles. Dr. Raymond H. Wheeler and hundreds of research assistants documented this with a lifetime of analysis beginning in the 1930s. If the climate follows Wheeler's cyclical pattern, we may well be entering a warmer, wetter epoch which will benefit agriculture.

Two decades ago I had many visits with physicist Iben Browning, a climate researcher and author of many works including Climate and the Affairs of Men, written with Nels Winkless III and published in 1975. Browning documented that past climate change has impacted humanity in massive ways, such as the barbarian invasion of China and the Phoenician presence in Stonehenge Britain.

He reminded readers in his 1975 book that the climate since 1925 had been unusually mild and beneficial; that a cooling could occur anytime.

And Browning told me that as he refined his computer models of climate change, "We get our best correlation with measured climate data when we ignore the presence of man and his use of carbon-emitting fuels."

2. Why is the IPCC's projected future global warming almost linear or accelerating, when it's well-known that the greenhouse-gas impact of CO2 fades sharply with each incremental increase of CO2 in the atmosphere?