CFC-11 was phased out under 1987's Montreal Protocol and the immediate halt of its usage has done much to reverse ozone depletion in the years since; but since 2012, atmospheric levels of CFC-11 have risen by 25%, eroding the still-healing ozone layer and suggesting that someone, somewhere, has started manufacturing the substance again.
No one really knows why you'd make CFC-11. Cheap substitutes are readily available. Some scientists believe the emissions originate somewhere in east Asia, and there are calls for fielding aircraft to conduct surveys to pinpoint the releases.
“They’re going to find the culprits,” Zaelke said. “This insults everybody who’s worked on this for the last 30 years. That’s a tough group of people.”
The ozone layer is slowly recovering, and ozone-depleting substances are still declining. But the apparent increase in emissions of CFC-11 has slowed the rate of decrease by about 22 percent, the scientists found. This, in turn, will delay the ozone layer’s recovery and, in the meantime, leave it more vulnerable to other threats.
“Knowing how much time and effort and resources have gone into healing the ozone layer and to see this is a shocker, frankly,” Montzka said.
Someone, somewhere, is making a banned chemical that destroys the ozone layer, scientists suspect [Chris Mooney/Washington Post]
In Switzerland, the state-owned Swissmint says today that a 2.96-millimeter (0.12-inches) gold coin created with Albert Einstein’s face on it is the smallest in the world.
Researchers in Berlin claim to have succeeded in re-creating the sound of the voice of an Egyptian person who died 3,000 years ago, and was entombed as a mummy.
The massive scale and force of the ongoing bushfires in Australia is hard to comprehend.
If you’re interested in either beginning or furthering a career in graphic design, you need to have a thorough understanding of Adobe’s famed editing and illustration tools, and these bundles will get you to where you need to be for a fraction of what you’d pay for an in-class education. 1. The Essential Adobe Photoshop […]
Laptops are great when it comes to getting work done on the move, but sometimes you need a better and more responsive keyboard in order to get your work done away from your desktop. Here are six top-rated Bluetooth keyboards that will help you power through your tasks both at the office or while you’re […]
The life of an entrepreneur is rarely easy, regardless of whether you’re running Google or have yet to get your first idea off the ground. So why not make your life easier with a lifetime subscription to Zuitte 50+ Tools for Entrepreneurs while it’s over 90% off? With over 50 powerful tools that help everyday […]