Exhaust Controls Air Pollution
Even if still charged by coal-fired electricity, at least an EV isn't belching exhaust fumes all over your kids as you drop them off. Car exhaust is toxic, and as we wait for battery tech to improve, we must rely on ever-more sophisticated filters to "cle
On a Friday afternoon in January 2017, toxic smog veils Beijing, just like it has many times before, causing a red alert. Nursery schools and schools close, old polluting cars are not allowed on the streets, and heavy industry such as steel rolling mills are asked to close down. The huge city comes to a halt. During the next few days, people try to stay indoors, and wear masks if they venture outside. The citizens of Beijing know very well that this thick, acrid smog should not be underestimated.
In 2014, China’s prime minister, Li Keqiang, officially declared war against air pollution, promising the population to “make the sky blue again”. Now, the citizens of Beijing are beginning to see the results.
In a lifetime, about 250 million litres of air pass through our lungs. That's a similar volume of gas as the amount of hydrogen in the Hindenberg. So If the air is even slightly polluted, the total quantity of toxins ending up in the body is tremendous.
For decades, scientists have known that smog causes diseases such as asthma, bronchitis, lung cancer, and other breathing difficulties. In recent years, other complications have been added to the list – including dementia, obesity, and arteriosclerosis. Annually, some 7.2 million people die an early
death, because they breathe harmful substances, making air pollution one of the the world’s biggest environmental problems.
Smog is big trouble in China. Sixteen of the world’s most polluted cities are located in the world’s most populous nation, which itself is home to a total of 1.4 billion people.
In Beijing, pollution exceeds international threshold values of unhealthy air more than half of the year. On the worst days, the air is worse than chain smoking.
China’s extremely unhealthy air is due to a combination of emissions from different sources. From power station chimneys, carbon dioxide is emitted, the exhaust pipes of cars fill the air with nitrogen dioxide, and ammonia vapour the result of the use of artificial fertilisers. Several of the gases also combine in the air, producing even more toxins. In late 2016, a US-Chinese study showed that cities with both heavy industry and heavy traffic are tormented by extra many extremely harmful sulphate compounds, which form based on sulphur dioxide, when large quantities of nitrogen dioxide are present.
TINY PARTICLES – MAJOR PROBLEMS
But in recent years, the toxic gases in the atmosphere have been overshadowed by a much more worrying type of pollution: microscopic particles which are so small that they can enter deep into the lungs, passing
ARE OIL RESERVES CURRENT KNOWN THE WORLD TO SUPPLY SUFFICIENT 50 YEARS. FOR ANOTHER WITH FUEL