Word: acidity
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...average listener, Bush’s words sounded reasonable. The exhaust from a hydrogen engine is just plain water—unlike the noxious mixture of greenhouse gases, acid rain-causing compounds, and uncombusted gasoline that normal engines emit. And supporters hope that increased usage of hydrogen would alleviate our dependence on foreign oil, if we aren’t fuelling up with Saudi gas. This is the popular allure of hydrogen fuel: cleaner than Dick Cheney’s dinner plate, and not beholden to unstable and perhaps unfriendly governments...
...half Bob's age. He weighs less, isn't as active, and has nice straight legs. Barely a trace of arthritis on X-ray and nothing except "minimal arthritic changes" on his MRI. He has taken Advil, Naprosyn, Voltaren, Celebrex with minimal help. Injections into his knees of hyaluronic acid (a component of joint fluid) and corticosteroids provided only a few weeks of relief. Physical therapy, braces, acupuncture, yoga all failed. He couldn't get out of chairs, couldn't climb stairs because of the pain. There was one thing left - a knee replacement - and it worked. But we hate...
Pomegranates and berries also contain ellagic acid, a polyphenol and potent antioxidant with heart-protective and anticancer effects. In berries the compound occurs mostly in seeds. Juice provides it in a more mouth-friendly...
...companies' allowance for carbon emissions. Companies that pollute less get credits and can then sell those credits to other companies, who buy them to offset their excess carbon. A similar market system for sulfur dioxide is already in place to cut sulfur pollution in half by 2010, dramatically reducing acid rain...
...market in Western Europe, that allows companies to buy and sell carbon dioxide permits. Thus, industries that cost more to clean up can buy the permits from companies that can cut emissions more cheaply, and reduce their costs. "A cap-and-trade program, which has been used for controlling acid rain in the U.S., will give industry flexibility," says Jason Mark of the Union of Concerned Scientists, a science-based non-profit. "If heat-trapping emissions are not reduced, the state faces poorer air quality, a sharp rise in extreme heat, a less reliable water supply, more dangerous wildfires...