Plumes of vapor generated by ancient impacts on Mars created tornado-like winds possibly swirling at more than 500 miles per hour, which explain mysterious streaks seen near large impact craters on the Martian surface.

Using geological observation, laboratory impact experiments and computer modeling of impact processes, Brown University geologist Peter Schultz and doctoral candidate Stephanie Quintana, have offered a new explanation for how those streaks were formed. The researchers show that tornado-like wind vortices — generated by crater-forming impacts and swirling at 500 miles per hour or more — scoured the surface and blasted away dust and small rocks to expose the blockier surfaces beneath.

Guido W. Imbens is the 2017 recipient of the Horace Mann Medal. Imbens is an influential econometrician who teaches at Stanford University’s Graduate School of Business. The honor is bestowed annually to a Brown University Graduate School alumnus or alumna who has made significant contributions in his or her field.
He will be honored at Commencement on May 28, 2017.

Björn Sandstede received the 2016-17 Graduate School Faculty Award for Advising and Mentoring. At the May 1 Awards Ceremony, Dean Andrew G. Campbell saluted Sandstede, Professor of Applied Mathematics and Chair of the Division of Applied Mathematics, for fostering both a supportive culture within the division and networks within the discipline. The award honors a faculty member who has made a significant contribution as an advisor or mentor to graduate students.

Dr. Shontay Delalue and Robyn S. Schroeder '16 PhD are receiving Graduate Student Council awards for staff members who make a difference for graduate students.