The Ozone Hole Over Antarctica Just Did Something It Hasn't In Decades
The ozone hole above Antarctica was first detected in 1985, according to NASA.LEARN MORE
Instead of looking at the actual size of the hole in the ozone, NASA measured how many harmful chemicals were in the atmosphere near the hole.
About 30 years since the Montreal Protocol was signed, which prohibited using ozone-destroying chemicals, NASA scientists say they have hard proof the hole in Earth's ozone layer is shrinking.
In the past, researchers determined ozone layer health by tracking how much the hole grew in a given time. But now, NASA scientists wanted to see specifically if the man-made, ozone-destroying chemicals in the atmosphere around the Antarctic ozone hole were declining.
For example, researchers measured the levels of chlorine, a primary source of ozone depletion, and found it's falling almost 1 percent a year.
Although the results of the new study are encouraging, they seem to contradict other recent findings about the hole in the ozone, like one that said it wasn't growing or shrinking. While the ozone hole did shrink to its smallest size since 1988, scientists say it was thanks to an unstable and warm atmosphere — not a drop in harmful chemicals.
Even if the results of the new study do hold true, scientists say it will take until at least 2060 for the hole in the ozone to vanish.
When Flint, Michigan, changed its municipal water supply source in 2014, distribution pipes corroded and lead leached out into the drinking water.By Newsy
A global exploration of microplastics' impact on our planet and on our health — and what scientists are doing to help fix the problem.By Newsy
Some companies buy carbon offset projects to achieve carbon-neutral pledges, but it's hard to prove those projects are doing what they claim.By Nariman El-Mofty / AP
The bill provides nearly $858 billion for national defense in addition to taking away a COVID vaccine mandate for U.S. military members.By Ted S. Warren / AP
Many — but not all – weather disasters are being turbocharged by human-caused climate change and are happening more frequently.By Zahid Hussain / AP
Griner was seen getting off a plane that landed Friday morning at Joint Base San Antonio-Lackland in Texas.By Eric Gay / AP