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  2. Health effects of radon - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_radon

    This means that a person living in an average European dwelling with 50 Bq/m 3 has a lifetime excess lung cancer risk of 1.53 × 10 −3. Similarly, a person living in a dwelling with a high radon concentration of 1000 Bq/m 3 has a lifetime excess lung cancer risk of 3–6%, implying a doubling of background lung cancer risk. [63]

  3. List of auto parts - Wikipedia

    en.wikipedia.org/wiki/List_of_auto_parts

    This is a list of auto parts, which are manufactured components of automobiles. This list reflects both fossil-fueled cars (using internal combustion engines ) and electric vehicles ; the list is not exhaustive.

  4. United States vehicle emission standards - Wikipedia

    en.wikipedia.org/wiki/United_States_vehicle...

    The average for its cars will have to be 42 mpg, and for its trucks will be 26 mpg by 2016, in coordination with new CAFE standards. [22] If the average fuel economy of a manufacturer's annual fleet of vehicle production falls below its defined standard, the manufacturer must pay a penalty, then US$5.50 per 0.1 mpg under the standard ...

  5. Diesel exhaust - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust

    [not verified in body] While total nitrogen oxides from petrol cars have decreased by around 96% through the adoption of exhaust catalytic converters as of 2012, diesel cars still produce nitrogen oxides at a similar level to those bought 15 years earlier under real-world tests; hence, diesel cars emit around 20 times more nitrogen oxides than ...

  6. Inert gas - Wikipedia

    en.wikipedia.org/wiki/Inert_gas

    The flue gas system uses the boiler exhaust as its source, so it is important that the fuel/air ratio in the boiler burners is properly regulated to ensure that high-quality inert gases are produced. Too much air would result in an oxygen content exceeding 5%, and too much fuel oil would result in the carryover of dangerous hydrocarbon gas.

  7. Background radiation - Wikipedia

    en.wikipedia.org/wiki/Background_radiation

    Radon is thus assumed to be the second leading cause of lung cancer after smoking, and accounts for 15,000 to 22,000 cancer deaths per year in the US alone. [9] [better source needed] However, the discussion about the opposite experimental results is still going on. [10] About 100,000 Bq/m 3 of radon was found in Stanley Watras's basement in 1984.

  8. Greenhouse gas - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas

    This is an accepted version of this page This is the latest accepted revision, reviewed on 13 February 2025. Gas in an atmosphere with certain absorption characteristics This article is about the physical properties of greenhouse gases. For how human activities are adding to greenhouse gases, see Greenhouse gas emissions. Greenhouse gases trap some of the heat that results when sunlight heats ...

  9. Radioactive decay - Wikipedia

    en.wikipedia.org/wiki/Radioactive_decay

    Today, the curie is defined as 3.7 × 10 10 disintegrations per second, so that 1 curie (Ci) = 3.7 × 10 10 Bq. For radiological protection purposes, although the United States Nuclear Regulatory Commission permits the use of the unit curie alongside SI units, [ 23 ] the European Union European units of measurement directives required that its ...