He was one of the world's preeminent authorities on nitrogen fixation, the
process by which certain microorganisms converts nitrogen from the
atmosphere into a form that can be taken up by plants. He made major
advances in the understanding of the biological systems involved and
developed much of the methodology used in nitrogen-fixation research.
The University of Wisconsin-Madison will welcome students back to campus as scheduled for the start of fall classes on September 2. To ensure a “Smart Restart” amid the COVID-19 pandemic, we are developing a comprehensive plan for resuming campus activities. Please find more information at https://www.wisc.edu/smartrestart/.