Air pollution from Asia has been rising for several decades but Hawaii had seemed to escape the ozone pollution that drifts east with the springtime winds. Now a team of researchers has found that shifts in atmospheric circulation explain the trends in Hawaiian ozone pollution.
Just like the rest of us, the kilogram has put on a bit of weight - and a little dose of sunshine may be the way to get it back down to size.
The hole in the ozone layer over the Antarctic was the second smallest in the last two decades, data from NASA and the National Oceanic and Atmospheric Administration (NOAA) satellites shows.
Last year saw a significant hole open up for the first time in the ozone layer over the Arctic.
Researchers have found that ozone can be reduced when electric vehicle charging is done at night.
Ozone levels over the Arctic have been plummeting in recent days, and look to be heading for a record loss.