Afghanistan, Oct. 28 -- It began with a simple suggestion: "When we go out with friends to enjoy ourselves, why not take a tree with us?"

The idea came from Tamim, a 27-year-old engineering graduate. He shared it with his brother, Iqbal Alamyar, and the two decided to turn their trips into nature into opportunities to plant trees.

Their first step came when the brothers and around 10 friends planted 12 saplings on a hillside in Omid Sabz Township, Kabul.

At the time, they may not have imagined that those 12 saplings would mark the beginning of a volunteer initiative that, about a year and a half later, would have planted more than 2,500 trees, according to the group. What began with limited resources has since expanded with the participa...