Imagining Other Worlds: How Planet-Forming Disks Can Shed Light on What is Possible 

The last decade of ALMA has transformed our view of planet-forming environments in all respects. High resolution images have revealed a diverse array of structured belts of millimeter-sized dust and a variety of distinct molecular compositions both within disks and between different disk systems. How does this diversity translate into the initial conditions for the formation of planets and the compositions (gas and solid) that they receive? Are planets likely to receive water and organic material at formation, or at some later phase from a belt of volatile-rich icy comets? I will present an overview of how our picture of the chemical and physical environment of planet formation has shifted in recent years, how this has pushed us to revise models, and how multiwavelength observational campaigns, including upcoming JWST programs, can help us find patterns in the apparent variety of protoplanetary environments.