The seminar, “Time Capsules for Climate Change,” asks students to write about the future of humanity in the context of a changing climate. The students use emerging science to think quantitatively about the impacts of climate change and possible strategies for mitigation. They are writing four essays that will be placed in time capsules to be opened at the students’ graduation in 2021 and at their 10th, 25th and 50th reunions. The time capsules are being stored in Princeton’s Mudd Library. Early in the semester, the students visited the University archives at Mudd Library (above) where they met with University Archivist Daniel Linke (at right). The course is led by Professor Emeritus Robert Socolow (rear right).