Lake Agassiz: Trigger man for the Younger Dryas or an innocent bystander? Sigma Gamma Epsilon's "Third Thursday Lecture" Series is hosting Ken Lepper from NDSU. Dr. Lepper will discuss Lake Agassiz in relationship to the Younger Dryas, an abrupt climate change 12,900 to 11,500 years ago. This lecture will be held at 6:30 p.m. Thursday, Oct. 18, in 100 Leonard Hall. Refreshments are provided. The Beta Zeta Chapter of Sigma Gamma Epsilon is an Earth Science honorary. For more details about this lecture or Sigma Gamma Epsilon, please contact Matthew Belobraydic at betazetasge@gmail.com. -- Matthew Belobraydic, President of the Beta Zeta chapter of Sigma Gamma Epsilon, Geology and Geological Engineering, matthew.belobraydic@und.edu, 71-777-0199