In its fourth year, the International Institute for Sustainable Laboratories (I2SL) International Laboratory Freezer Challenge drew 218 laboratory participants from around the world, from 88 research institutions. Three MIT laboratories participated in the challenge: the Department of Biology’s Barbara Imperiali Lab, Department of Biological Engineering’s Jacquin Niles Lab, and Department of Biology/Whitehead Institute for Biomedical Research’s David Sabatini Lab. MIT and the Whitehead Institute together received the Top Academic Organization Award. The Niles lab and the Imperiali lab are MIT Environment, Health & Safety (EHS) Green Lab Certified. The Freezer…