Aims. To study the contribution of old scientists and artists to the Human Capital of Age.
Methods. We have studied the Human Capital of Age in university professors, scientists and artists. We have analyzed the answers to questionnaires of 99 professors in 99 universities of 20 countries with diverse gross domestic product (GDP), and the 10 most important discoveries in medicine in the years 1453- 1953 all made by young scientists.
Discussion. The best teams are made by old and young scientists, supervised by a young coordinator.
Conclusion. The best solution to the problem of ageing scientists is that practiced in USA where tenures are for life and merit is the first goal of the scientific enterprise.