More Hole in the ozone layer is finally 'healing' … Chlorine reacting with these beautiful stratospheric clouds over Antarctica is the cause of the hole in the ozone layer (Cynthia Spence/NSF) The ozone hole over Antarctica is finally "healing" almost 30 years after the world banned the chemicals responsible for its creation, researchers say.  – ABC

So the Ozone hole is finally healing. Hallelujah.

Here's a statement reported in the article excerpted above from "ozone hole expert" Professor Susan Solomon:

Professor Solomon said the discovery, published in Science, lent hope for the fight against climate change.  "The ozone example shows that when people engage with environmental problems, policymakers have a basis for making choices," she said.

"The world decided to take an action on these chemicals, and the planet is responding as we expected. People can take heart by seeing that our choices can help the environment."

We can see from her statement that humans can take action to make the environment better.

In other words, if government passes the right laws, then the planet can benefit.

Ms. Solomon is encouraged, obviously. More:

… Professor Solomon, from the Massachusetts Institute of Technology, said the hole still averages about 17 million square kilometres in size.  "It isn't completely healed, but it's better than the 21 million we had around 2000," she said.

CFC's were phased out in 1987, but as they float around in the atmosphere for years, any impact must be measured over decades.

Solomon's optimism was echoed by Dr. Olaf Morgenstern of NIWA in New Zealand.

The article quotes him as saying, "This new research is consistent … with model projections which indicate a gradual healing of the ozone hole and its disappearance in the second half of this century."