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  2. Phase-out of fossil fuel vehicles - Wikipedia

    en.wikipedia.org/wiki/Phase-out_of_fossil_fuel...

    A phase-out of fossil fuel vehicles are proposed bans or discouragement (for example via taxes) on the sale of new fossil-fuel powered vehicles or use of existing fossil-fuel powered vehicles, as well the encouragement of using other forms of transportation. Vehicles that are powered by fossil fuels, such as gasoline (petrol), diesel, kerosene ...

  3. Phase-out of polystyrene foam - Wikipedia

    en.wikipedia.org/wiki/Phase-out_of_polystyrene_foam

    Phase-out of polystyrene foam. Discarded polystyrene cup on the shore of Lake Michigan. In the late 20th and early 21st century, there has been a global movement towards the phase-out of polystyrene foam as a single use plastic (SUP). Early bans of polystyrene foam intended to eliminate ozone-depleting chlorofluorocarbons (CFCs), formerly a ...

  4. Ionizing radiation - Wikipedia

    en.wikipedia.org/wiki/Ionizing_radiation

    Ionizing radiation. Ionizing radiation (US, ionising radiation in the UK), including nuclear radiation, consists of subatomic particles or electromagnetic waves that have sufficient energy to ionize atoms or molecules by detaching electrons from them. [1] Some particles can travel up to 99% of the speed of light, and the electromagnetic waves ...

  5. Gray card - Wikipedia

    en.wikipedia.org/wiki/Gray_card

    A gray card is a flat object of a neutral-gray color that derives from a flat reflectance spectrum. A typical example is the Kodak R-27 set, which contains one 8 in × 10 in (20 cm × 25 cm) card and one 4 in × 5 in (10 cm × 13 cm) card, each with an 18% reflectance across the visible spectrum, and a white reverse side with a 90% reflectance.

  6. List of smoking bans in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_smoking_bans_in...

    Statewide smoking ban: On May 1, 2007, the Smoke Free Arizona Act (Proposition 201) went into effect after passage by 54.7% of voters the prior November, banning smoking in all enclosed workplaces and within 20 feet (6.1 m) of an entrance or exit of such a place, including bars and restaurants, only exempting private residences, retail tobacco ...

  7. Credit default swap - Wikipedia

    en.wikipedia.org/wiki/Credit_default_swap

    Credit default swaps in their current form have existed since the early 1990s and increased in use in the early 2000s. By the end of 2007, the outstanding CDS amount was $62.2 trillion, [3] falling to $26.3 trillion by mid-year 2010 [4] and reportedly $25.5 [5] trillion in early 2012.

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