We have added a new video clip of the first five min­utes of an inter­view with Dr. Hal­dor Top­soe. This may be viewed by going to the “His­to­ry of Catal­y­sis” fold­er on the NACS web­site; then select “Hal­dor Top­soe” under His­tor­i­cal Video Clips.
 
John Armor and Burt Davis