Professor Andrew Whittle delivered the 21st Buchanan Lecture at Texas A&M University on Nov. 22. Whittle, the Edmund K. Turner Professor in CEE, spoke on “The Importance of Undrained Behavior in the Analysis of Soil-Structure Interactions.” The Buchanan Lecture was established in 1993 to honor Buchanan, who graduated from Texas A&M in 1926, and later founded the Soil Mechanics Division of the Texas A&M Zachry Department of Civil Engineering. The list of previous Buchanan lecturers includes many of the leading figures in geotechnical engineering.