Become a philatelist (one who studies and collects stamps)! This week, the intrepid Professor Bober, famous for great engineering feats like dams, invites you to discover stamps.

Find out what stories are hidden behind the images of stamps in the "History Through the Prism of Postage Stamps" project. There’s so much history and culture in stamps worldwide.

To take part in the project, you do not necessarily have to collect actual stamps: you can find your favorite stamps online or visit the nearest post office.

Fill in a report form for each stamp you explore. Whoever sends us the most completed report forms will be awarded a special badge from Professor Bober.

Who’ll send the most completed report forms?