Ozone : Science World Report

Apr 28, 2014 06:53 PM EDT

Switching from Ethanol to Gasoline Causes Ozone Levels to Drop 20 Percent in Four Years

Researchers found that the air quality in São Paulo, Brazil experienced significant improvement with a simple switch in fuels. With high ethanol prices affecting the city, vehicle owners switched to gasoline and helped ozone levels drop 20%.

Dec 17, 2013 04:43 PM EST

Scientists Still Waiting for Clear Signs of Ozone Hole Healing

Earth's upper atmosphere is still so saturated with ozone-eating chlorine that it will take about another decade for evidence that a nearly 25-year-old ban on such destructive chemicals is working, scientists said.

Dec 12, 2013 09:44 AM EST

NASA Sheds Light Inside of the Ozone Hole Over Antarctica

It turns out that the ozone hole may not be completely healed--at least according to new NASA data. Scientists have examined the inner workings of the ozone hole that forms annually over Antarctica and have found that declining chlorine in the stratosphere has not yet caused a recovery of the ozone ...