Between 9th-10th March, Tartu hosted the final round of the Estonian Biology Olympiad for high school students. Meelis Pärtel gave an interesting talk about the secrects of biodiversity ("Elurikkuse saladuste jälil") to all the participants. He introduced the recent scientific findings by our workgroup and colleagues as well as talked about the unanswered questions in biodiversity studies that need to be resolved by the future generations.