Session 2: PNe as a versatile laboratory I Chair: Michael Barlow https://www.cambridge.org/core/terms. https://doi.org/10.1017/S1743921317001004 Downloaded from https://www.cambridge.org/core. IP address: 54.175.237.59, on 07 Dec 2021 at 02:36:23, subject to the Cambridge Core terms of use, available at