Discovery investigates chemtrails.

This special program of the show "BEST EVIDENCE" was broadcasted August 10th, 2007. It looks at those who claim that jet fuel of commercial and military aircrafts contain secret experimental additives, such as aluminum oxide, for weather modification purposes. The scientific theory behind this claim is that such additives could act like small mirrors to reflect sun rays, thus, slowing down the coming disastrous effects of global warming and climate change. Those who make this conclusion also say that some of these alleged experimental jet fuel additives can harm the health of plants, animals and humans, even if there was a positive intent behind them to help slow down global warming. Interviewed are atmospheric scientists who say that there is no scientific evidence available to make such conclusions. The Discovery Channel team travelled to Kettering University in Flint, Michigan, where they commissioned a scientific test of a random jet fuel sample from the local airport. Though a limited test using only one random sample of commercial jet fuel, it doesn't show anything abnormal about its chemical composition. Discovery Channel's conclusions is that though there is no proven scientific evidence yet that contrails of civilian or military airplanes contain experimental additives and chemicals, they discover that the US military has the technology available to manipulate the weather using these means if they wish to do so through a secret program, as they did in Vietnam during the Vietnam war through a project called "Operation Popeye." Journalist William Thomas concludes by saying that in the winter of 2005, the United States government established a federal bureau of weather modification in Washington, DC. He says this is a government mandated agency whose stated mission is to modify the weather and climate. Under this rubric, he claims that the government could come out and admit to a chemtrail-type project.