Africa Global Ozone 
Green Car Congress
FEBRUARY 6, 2018
Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Trends in daily maximum ozone levels (known as 4MDA8) at urban and non-urban sites.
Green Car Congress
NOVEMBER 21, 2011
The decrease in CO 2 equivalent emissions of ODSs (ozone-depleting substances: CFCs, halons, HCFCs, and others) may be offset by the projected increase in their non-ozone depleting substitutes (HFCs) (lines designated as HFC scenarios). Climate and the Ozone Layer. Source: UNEP. Click to enlarge.
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Green Car Congress
SEPTEMBER 6, 2013
This was agreed by: Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey,the United Kingdom, the United States, and the European Union, as well as Ethiopia, Spain, Senegal, Brunei, Kazakhstan, and Singapore.
Green Car Congress
FEBRUARY 22, 2011
The global warming potentials (GWP) of HFCs range from 140 (HFC-152a) to 11,700 (HFC-23), according to the US EPA. HFCs are chemicals are potential substitutes for ozone-depleting and climate-warming CFCs and HCFCs currently being phased out under the Montreal Protocol treaty to protect the ozone layer.
Green Car Congress
SEPTEMBER 25, 2009
There is also growing concern among some scientists that thresholds or tipping points may now be reached in a matter of years or a few decades including significant changes to the Indian sub-continent’s monsoon, the Sahara and West Africa monsoons, and climate systems affecting a critical ecosystem like the Amazon rainforest.
Green Car Congress
APRIL 2, 2012
Despite the rapidly expanding body of scientific literature on BC, there is a need for a more comprehensive evaluation of both the magnitude of particular global and regional climate effects due to BC and the impact of emissions mixtures from different source categories. The United States contributes about 8% of the global emissions of BC.
Cars That Think
NOVEMBER 16, 2021
If they meet all the pledges they've made for emission reductions by 2030, global temperature rise will be at 2.4° Many people see such actions as "playing God," and worry about the unintended consequences of meddling with nature on a global scale. Humanity is already reducing global warming. by spewing pollution into the air.
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