Gulnaz Khan
More from Gulnaz Khan
![Young cities from around the world in floating bubbles on a light green and mint background](https://www.popsci.com/wp-content/uploads/2021/11/24/PSCFA21_YoungCities_01_Opener.jpg?w=675)
These young cities are solving age-old problems These young cities are solving age-old problems
By Gulnaz Khan
November 29, 2021
![collage image showing people hugging and planting trees, with a 100 dollar bill surrounding them](https://www.popsci.com/wp-content/uploads/2020/12/18/MZGVG5AGYRGRFIKZY25UEII4K4.jpg?w=675)
Health
How to spend your money for maximum happiness How to spend your money for maximum happiness
By Gulnaz Khan
December 21, 2020