New research by a team of scientists shows that black carbon aerosols and ozone, both man-made pollutants, are most likely pushing the boundary of the tropics further poleward.
![Sherwood[1]](https://newsroom.unsw.edu.au/sites/default/files/styles/teaser_thumbnail/public/thumbnails/image/sherwood%5B1%5D_3_1.jpg?itok=PGQTwDCF "Sherwood[1]")