The submitted Idea Machine entries were in the form of short concept outlines and videos rather than full-length research proposals. To develop these conceptual descriptions into actionable research agendas that include sets of specific research questions, NSF seeks proposals for catalytic activities in the form of: 1) Conferences that bring together those interested in shaping any or a group of these top 33 broad ideas into actionable research themes, or new long-term research programs – proposal deadline: March 15, 2020; and 2) EAGER projects to extend, develop and test concepts from among the top 33 ideas that are ripe for early stage, transformative research – concept outlines deadline: March 1, 2020.