Selected papers from the 17^th Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments, held virtually April 19-23, 2021. Sponsored by the Aerospace Division of ASCE.

This collection contains 128 peer-reviewed papers on multidisciplinary approaches to engineering in extreme environments.

Topics include: granular materials in space exploration; exploration and utilization of extraterrestrial bodies; and space engineering, construction, and architecture for the Moon, Mars, and beyond.

This collection will be of interest to engineers, scientists, educators, and professionals from varied disciplines working in challenging environments.