In an open letter to their daughter, who the couple have named August, they talked about the importance of "making time to go outside and play".
The effusive message from Chan and Zuckerberg, who is the founder of the world's most popular social network, told August to smell flowers and play with leaves.
استمعوا هنا الى البث المباشر لإذاعتنا و لإذاعة BBC أيضا
