6. Justin Bieber
The (second) youngest star on our list, at the age of 25 Justin Bieber has made some important contributions to the world of philanthropy. The multi-talent singer became part of the charity Pencils of Promise, a non-profit organization dedicated to building schools in developing countries. He serves as the ambassador of the charity, and in 2013 he became the organization’s campaign manager in Guatemala.

In 2013, he traveled with the organisation to an underprivileged village in Guatemala (shown in the photo), where he helped assemble the first primary school of the village, and by that we mean he took an active part in physically building the structure, and in between carrying blocks, he found the time to play with the local children, who will one day enjoy this school. The singer was involved in his fair share of scandals, but once in a while it’s nice to take a look at this other side of him people are less familiar with.