The International Journal of Molecular Sciences recently published a special issue on the occasion of Prof. Wessjohann's 60th birthday. At the time of the anniversary last year, editor of the special issue and visiting scientist at IPB, Hidayat Hussain, had called for submissions. Research teams from across the globe, including two from the IPB, followed the prompt and in total submitted 16 research articles on the topic of "Natural Products in Modern Drug Discovery" - the topic that also dominates Prof. Wessjohann's scientific work. In addition, Hidayat Hussain also honored the jubilarian with an editorial. The special issue is published online and available in open access: https://www.mdpi.com/journal/ijms/special_issues/Natural_Anticancer_Agents