Dagomar Degroot
Professor of Environmental History, Georgetown University, Washington, DC
Dagomar Degroot is an associate professor of environmental history at Georgetown University and the 2024/25 Blumberg Chair of Astrobiology at the Library of Congress. His new book is Ripples on the Cosmic Ocean: An Environmental History of Our Place in the Solar System (2025). He lives in Washington, DC.
Written by Dagomar Degroot

essayCosmology
Megastructures on Mars
Images of vast ‘canals’ rippling across the red planet inspired fears of alien ‘engineers’ and changed science forever
Dagomar Degroot

essaySpace exploration
A lunar pandemic
In the 1960s, NASA went to huge expense to contain possible pathogens from the Moon. What can we learn from the attempt?
Dagomar Degroot

essayEnvironmental history
Little Ice Age lessons
The world’s last climate crisis demonstrates that surviving is possible if bold economic and social change is embraced
Dagomar Degroot

ideaEnvironmental history
Did European colonisation precipitate the Little Ice Age?
Dagomar Degroot